Tribal Census TractsThis feature layer, utilizing National Geospatial Data Asset (NGDA) data from the U.S. Census Bureau (USCB), depicts American Indian tribal census tracts. Per the USCB, "a tribal census tract is a relatively permanent statistical subdivision of a federally recognized American Indian reservation and/or off-reservation trust land, delineated by the American Indian tribal government and/or the Census Bureau for the purpose of presenting demographic data. For federally recognized American Indian Tribes with reservations and/or off-reservation trust lands with a population less than 2,400, a single tribal census tract is defined. Qualifying areas with a population greater than 2,400 could define additional tribal census tracts within their area". Tribal Census Tract T001Data currency: This cached Esri federal service is checked weekly for updates from its enterprise federal source (Tribal Census Tracts) and will support mapping, analysis, data exports and OGC API – Feature access.NGDAID: 95 (Series Information for Tribal Census Tract National TIGER/Line Shapefiles, Current)OGC API Features Link: (Tribal Census Tracts - OGC Features) copy this link to embed it in OGC Compliant viewersFor more information, please visit: Decoding State-County Census Tracts versus Tribal Census TractsFor feedback please contact: Esri_US_Federal_Data@esri.comNGDA Data SetThis data set is part of the NGDA Governmental Units, and Administrative and Statistical Boundaries Theme Community. Per the Federal Geospatial Data Committee (FGDC), this theme is defined as the "boundaries that delineate geographic areas for uses such as governance and the general provision of services (e.g., states, American Indian reservations, counties, cities, towns, etc.), administration and/or for a specific purpose (e.g., congressional districts, school districts, fire districts, Alaska Native Regional Corporations, etc.), and/or provision of statistical data (census tracts, census blocks, metropolitan and micropolitan statistical areas, etc.). Boundaries for these various types of geographic areas are either defined through a documented legal description or through criteria and guidelines. Other boundaries may include international limits, those of federal land ownership, the extent of administrative regions for various federal agencies, as well as the jurisdictional offshore limits of U.S. sovereignty. Boundaries associated solely with natural resources and/or cultural entities are excluded from this theme and are included in the appropriate subject themes."For other NGDA Content: Esri Federal Datasets

This resource is a member of a series. The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). The MTDB represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line shapefile is designed to stand alone as an independent data set, or they can be combined to cover the entire nation. A tribal block group is a cluster of census tabulation blocks within a single tribal census tract delineated by American Indian tribal participants or the Census Bureau for the purpose of presenting demographic data on their reservation and/or off-reservation trust land. The tribal block groups are defined independently of the standard county-based block group delineation. For federally recognized American Indian Tribes with reservations and/or off-reservation trust lands with a population less than 1,200, a single tribal block group is defined. Qualifying reservations and/or off-reservation trust lands with a population greater than 1,200 could define additional tribal block groups within their area without regard to the standard block group configuration. Tribal block groups do not necessarily contain tabulation blocks always beginning with the same number and could contain seemingly duplicate block numbers. Tabulation block numbers are still assigned by using standard block groups, not the tribal block groups. To better identify tribal block groups, the letter code range A through K (except I, which could be confused with a number 1) is used uniquely within each tribal census tract. The boundaries of tribal block groups are those delineated through the Participant Statistical Areas Program (PSAP) for the 2020 Census.

This resource is a member of a series. The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). The MTDB represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line shapefile is designed to stand alone as an independentdata set, or they can be combined to cover the entire nation. A tribal census tract is a relatively permanent statistical subdivision of a federally recognized American Indian reservation and/or off-reservation trust land, delineated by the American Indian tribal government and/or the Census Bureau for the purpose of presenting demographic data. For the 2020 Census, tribal census tracts are defined independently of the standard county-based census tract delineation. For federally recognized American Indian Tribes with reservations and/or off-reservation trust lands with a population less than 2,400, a single tribal census tract is defined. Qualifying areas with a population greater than 2,400 could define additional tribal census tracts within their area. The tribal census tract codes for the 2020 Census are six characters long with a leading "T" alphabetic character followed by a five-digit numeric code, for example, T01000, which translates as tribal census tract 10. Tribal block groups nest within tribal census tracts. Since individual tabulation blocks are defined within the standard State-county-census tract geographic hierarchy, a tribal census tract can contain seemingly duplicate block numbers, thus tribal census tracts cannot be used to uniquely identify census tabulation blocks for the 2020 Census. The boundaries of tribal census tracts are those delineated through the Participant Statistical Areas Program (PSAP) for the 2020 Census.

The American Indian and Alaska Native Summary File (AIANSF) contains summary data for Native Americans derived from the 2010 Census questionnaire. Covered population and housing subjects include age, sex, tribal affiliation (enrolled or principal tribe), household relationship, household type, household size, family type, family size, group quarters and housing tenure. The data are organized in 71 tables (one variable per table cell) which are iterated for the total population, the total American Indian and Alaska Native population alone, the total American Indian and Alaska Native population alone or in combination with one or more other races, and 1,567 detailed tribes and tribal groupings. Sixty-one tables are presented down to the census tract level and 10 tables down to the county level. Altogether the tables are presented at 76 levels of observation, including the United States as a whole, regions, divisions, states, counties, county subdivisions, places, census tracts, metropolitan statistical areas/micropolitan statistical areas, congressional districts (111th Congress), state legislative districts, school districts, 5-digit ZIP code tabulation areas, American Indian Areas/Alaska Native Areas/Hawaiian Home Lands, tribal subdivisions and tribal census tracts. In the Census Bureau's nomenclature, the population group iterations are called "characteristic iterations" and levels of observation are called "summary levels." The AIANSF tables are also presented for geographic components of some summary levels, e.g., all federally-recognized American Indian reservations collectively within each state or the nation as a whole; all metropolitan statistical areas collectively within each state or the nation as a whole, and the principal cities of metropolitan or micropolitan statistical areas. AIANSF contains 17,271 data files: a file with geographic identification variables (the geographic header record file) and 11 files with the population and housing variables for each characteristic iteration. Together with the data files, the Census Bureau prepared a codebook, Microsoft Access database shell and additional documentation. ICPSR provides the data files in a ZIP archive and the database shell and additional documentation in a second ZIP archive

Abstract

The 44th round started from July 1988. The survey period of this round was July 1988 to June 1989. This round has been devoted to mainly three enquiries. First and foremost, there has been an enquiry on the living condition of the tribal population. Of the other two, one is concerned with the housing condition of the general population and the other is a survey on current building construction activity. For the purpose of this enquiry, “tribal population” mean the members of the Scheduled Tribes declared under the Article 342 of the Constitution of India. They are known to be the descendants of the earliest inhabitants of India (hence called “Adivasis”). At present, in most parts of India, they form one of the economically weakest sections of the society. So far there has not been any systematic study of their living conditions covering the whole country. Whatever data are available are derived from the decennial censuses, apart from some micro studies carried out by social anthropologists. In the NSS the tribal population has always been covered as part of the general population. In NSS 32nd and 33rd rounds special surveys had been carried out through an integrated schedule (schedule 16.4) in the North-Eastern region. The survey was conducted in the rural areas of the following States:- 32nd round : Arunachal Pradesh, Assam (N. Cachar and Karbi Anglong districts only), Manipur, Meghalaya and Tripura; 33rd round: In addition to the above States, Mizoram also. Even though this covered many aspects specially related to the life of the people of this region (who are mostly tribals), no such survey has so far been undertaken about the life of the tribals living in the main tribal belt stretching from West Bengal through Bihar, Orissa, Madhya Pradesh to Gujarat and Rajasthan. The scope of the enquiry is to understand the living condition of the tribals living in the main tribal belt stretching from West Bengal through Bihar, Orissa, Madhya Pradesh to Gujarat and Rajasthan.) The object of the enquiry in the this round is to throw light on as many aspects as possible of the tribal population of this country. This relates to aspects of their “level of the living” including demographic and activity particulars, family expenditure etc. as well as to their entrepreneurial activities.

Geographic coverage

The survey covered the whole of Indian Union except Ladakh and Kargil districts of Jammu and Kashmir state. The rural areas of Nagaland, so far outside NSS coverage up to the 43rd round, have also been brought in this round.

Analysis unit

Randomly selected households based on sampling procedure and members of the household

Universe

The survey used the interview method of data collection from a sample of randomly selected households and members of the household.

Kind of data

Sample survey data [ssd]

Sampling procedure

The sample design is stratified two-stage with the census village as the first stage unit in the rural sector and UFS block as the first stage unit in the urban sector. The second stage units are households.

The sample design in the rural sector has been decided with a view to providing good estimates for the tribal enquiry. Except in the north-eastern region, the tribal population is concentrated in some districts within the states having considerable tribal population and even in those districts they are found to be unevenly distributed geographically. Therefore special stratification and selection procedures have been adopted not only to net sufficient number of tribal households in the sample but also to improve the design in general for the tribal enquiry.

While the rural design is oriented towards the tribal enquiry, the urban design is oriented towards the enquiry on construction. As building construction activity is found to be concentrated in some areas in the urban sector, attempts have been made in urban design to demarcate such areas in larger towns as separate strata. Detailed description of the rural and urban sample designs are as follows:

SAMPLE DESIGN : RURAL

Sampling frame of villages: The list of 1981 census villages constitute the sampling frame for selection of villages in most districts. However in Assam (where '81 census was not done) and a few districts of some other states (where the available lists of villages were not satisfactory), 1971 census village lists have been used as frame.

Stratification :
In Haryana, Jammu & Kashmir, Punjab, Chandigarh, Delhi, Goa, Daman & Diu and Pondicherry where there are practically no tribal population, the strata used in NSS 43rd round were retained. In Meghalaya, Mizoram, Nagaland, Arunachal Pradesh, Sikkim, Dadra and Nagar Haveli and Lakshadweep also the strata of 43rd round were retained because of the high percentage of ST population in these States/U.T.'s. (The strata of 43rd round have been retained in the case of Sikkim as the distribution of tribal population is more or less uniform over all the districts). In the remaining states fresh stratification was carried out as described below.

In these states all districts accounting for the bulk of the state's tribal population were selected for formation of strata with concentration of tribal population. Besides these districts, tribal concentration strata have been demarcated also in some other districts with relatively small tribal population in order to ensure coverage of as many different ethnic groups as possible.

Within each district so identified for formation of tribal concentration strata, the tehsils with relatively high concentration of tribal population, together constituted one stratum. These tehsils were selected in such a way that together they accounted for the bulk (70% or more) of the district tribal population and the proportion of tribal to total population in this stratum was significantly greater than that of the district as a whole. The strata so formed were not always geographically contiguous. These tribal concentration strata are called STRATUM TYPE -1. Further, all the strata of Meghalaya, Mizoram, Nagaland, Arunachal Pradesh, Dadra & Nagar Haveli, Lakshadweep and Sikkim are also considered as stratum type-1. All the remaining strata in the rural sector (in any State/U.T.) are called stratum type -2.

Sampling deviation

There was no deviation from the original sampling design.

Mode of data collection

Face-to-face [f2f]

Research instrument

NSS Round 44 Schedule 29.2 consists of 17 blocks as enumerated below:

Block 1: identification of sample household Block 2: particulars of field operations Block 3: remarks by investigator Block 4: remarks by supervisory officer (s) Block 5: household characteristics Block 6: demographic particulars of household members Block 7: particulars of assistance received by the household during last 3 years Block 8: particulars of land owned and possessed Block 9: particulars of disposal of land during last 5 years Block 10: information on input items for cultivation during 1987-88 Block 11: particulars of crops produced during 1987-88 Block 12: particulars of wage employment in forest and forestry operation
Block 13: particulars of forest produce collected, consumed at home and sold by household members during last 30 days as self-employed Block 14: particulars of household enterprise (other than cultivation) during last 30 days Block 15: particulars of products (other than forest products) marketed during last 30 days Block 16 : inventory of assets owned on the date of survey Block 17 : cash dues and grain & other commodity dues payable by the household as on the date of survey and particulars of transaction of loans during last 365 days

Specified tribal affiliation for the Native American and Alaska Native alone population.

In 2020, during the lockdown in India, approximately ** percent of the tribal high migration communities in Rajasthan reported availability of cereals. By contrast, only ** reported availability of meat, fish and eggs during the same time period.

Tribal block groups are statistical areas defined to provide statistically significant sample data for small areas within American Indian areas, particularly those American Indian areas that crossed state or county boundaries where these boundaries were not meaningful for statistical purposes. The 2010 tribal block groups are defined independently of the standard county-based block group delineation. For federally recognized American Indian tribes with reservations or off-reservation trust land and a population less than 1,200, a single tribal block group is defined. Tribal participants in qualifying areas with a population greater than 1,200 could define additional block groups within their reservation and/or off-reservation trust land without regard to the standard block group configuration.Tribal block groups nest within tribal census tract.For More Information go to: https://tigerweb.geo.census.gov/tigerwebmain/TIGERweb_geography_details.html

Compilation of data from multiple sources on ST and non-ST populations national average compared with ST & non-ST population averages for these indicators in Karnataka, Kerala, Tamil Nadu, Madhya Pradesh, Arunachal Pradesh

mitochondrial DNA complete sequences of tribal population of Chattishgarh, India

description: A tribal block group is a cluster of census tabulation blocks within a single tribal census tract delineated by American Indian tribal participants or the Census Bureau for the purpose of presenting demographic data on their reservation and/or off-reservation trust land. The tribal block groups are defined independently of the standard county-based block group delineation. For federally recognized American Indian Tribes with reservations and/or off-reservation trust lands with a population less than 1,200, a single tribal block group is defined. Qualifying reservations and/or off-reservation trust lands with a population greater than 1,200 could define additional tribal block groups within their area without regard to the standard block group configuration. Tribal block groups do not necessarily contain tabulation blocks always beginning with the same number and could contain seemingly duplicate block numbers. Tabulation block numbers are still assigned by using standard block groups, not the tribal block groups. To better identify tribal block groups, the letter code range A through K (except I, which could be confused with a number 1) is used uniquely within each tribal census tract. The boundaries of tribal block groups and tribal census tracts are those delineated through the Tribal Statistical Areas Program (TSAP) for the 2010 Census.; abstract: A tribal block group is a cluster of census tabulation blocks within a single tribal census tract delineated by American Indian tribal participants or the Census Bureau for the purpose of presenting demographic data on their reservation and/or off-reservation trust land. The tribal block groups are defined independently of the standard county-based block group delineation. For federally recognized American Indian Tribes with reservations and/or off-reservation trust lands with a population less than 1,200, a single tribal block group is defined. Qualifying reservations and/or off-reservation trust lands with a population greater than 1,200 could define additional tribal block groups within their area without regard to the standard block group configuration. Tribal block groups do not necessarily contain tabulation blocks always beginning with the same number and could contain seemingly duplicate block numbers. Tabulation block numbers are still assigned by using standard block groups, not the tribal block groups. To better identify tribal block groups, the letter code range A through K (except I, which could be confused with a number 1) is used uniquely within each tribal census tract. The boundaries of tribal block groups and tribal census tracts are those delineated through the Tribal Statistical Areas Program (TSAP) for the 2010 Census.

In 2020, during the lockdown in India, approximately ** percent of households belonging to tribal high migration communities in Rajasthan reported not enough food to eat sometimes. By contrast, only *** percent reported there often not being enough food to eat.

Tribal census tracts are statistical areas defined within federally recognized American Indian reservations and off-reservation trust land areas. They are designed to be permanent statistical divisions of American Indian areas for the presentation of comparable data between censuses, particularly for those American Indian areas that crossed state or county boundaries where these boundaries were not meaningful for statistical purposes. The 2010 tribal census tracts are defined independently of the standard county-based tract delineation. For federally recognized American Indian tribes with reservations or off-reservation trust land and a population less than 2,400, a single tribal census tract is defined. Qualifying areas with a population greater than 2,400 could define additional tribal census tracts within their area. For 2010, tribal census tracts are defined independently of the standard county-based tract delineation.Tribal block groups nest within tribal census tract.For More Information go to: https://tigerweb.geo.census.gov/tigerwebmain/TIGERweb_geography_details.html

Abstract

In pursuance of the recommendations made by the Governing Council (G.C.) of the National Sample Survey Organization (NSSO) in its 44th meeting held on 16 January 1987 to undertake a comprehensive survey on the socio-economic conditions of the tribal people in the 44th round (July 1988 - June 1989) of NSS, various schedules of enquiries on the subject were drawn up and tested in the field through a try-out survey. The schedules were discussed in details in the meetings of the Working Groups (W.G) set up by the G.C., NSSO for the NSS 44th round. In the light of the experiences gained through the try-out survey, the schedules of enquiry were finalized by the W.G. and subsequently approved by the G.C. of the NSSO in its 45th meeting held on 29 December 1987.

With a view to studying the problems of land alienation faced by the tribal population due to in-migration of non-tribals in the tribal areas and also to assess the differences in the socio-economic standard of living between the tribals and the non-tribals, a schedule of enquiry (schedule type 29.3) was designed and collected information from the non-tribal households residing in the tribal areas.

The Survey measures the disparity between the tribal and non-tribal households in respect of certain key characteristics and also the extent of displacement of the tribal population from the tribal belts due in-migration of non-tribals. This schedule relate to in-migration, economic activity, assets and liabilities along with the details about the extent and manner of acquisition and disposal of land by the non-tribals.

Geographic coverage

National, State, Urban, Rural

Analysis unit

Households

Universe

All tribbles households within country

Kind of data

Sample survey data [ssd]

Sampling procedure

The sample design is, as usual, stratified two-stage with the census village as the first stage unit in the rural sector and UFS block as the first stage unit in the urban sector. The second stage units were households for all schedules.The sample design in the rural sector was decided with a view to providing good estimates for the tribal enquiry. Except in the north-eastern region, the tribal population was concentrated in some districts within the states having considerable tribal population and even in those districts they were found to be unevenly distributed geographically. Therefore special stratification and selection procedures were adopted not only to net sufficient number of tribal households in the sample but also to improve the design in general for the tribal enquiry.

Sampling frame of villages: The list of 1981 census villages constitute the sampling frame for selection of villages in most districts. However in Assam (where '81 census was not done) and a few districts of some other states (where the available lists of villages were not satisfactory), 1971 census village lists were used as frame.

Stratification : In Haryana, Jammu & Kashmir, Punjab, Chandigarh, Delhi, Goa, Daman & Diu and Pondicherry where there were practically no tribal population, the strata used in NSS 43rd round were retained. In Meghalaya, Mizoram, Nagaland, Arunachal Pradesh, Sikkim, Dadra and Nagar Haveli and Lakshadweep also the strata of 43rd round were retained because of the high percentage of ST. population in these States/U.T.'s. (The strata of 43rd round have been retained in the case of Sikkim as the distribution of tribal population is more or less uniform over all the districts).In the remaining states fresh stratification was carried out as described below.

In these states all districts accounting for the bulk of the states's tribal population were selected for formation of strata with concentration of tribal population. Besides these districts, tribal concentration strata were demarcated also in some other districts with relatively small tribal population in order to ensure coverage of as many different ethnic groups as possible.

Within each district so identified for formation of tribal concentration strata, , the tehsils with relatively high concentration of tribal population, together constituted one stratum. These tehsils were selectd in such a way that together they accounted for the bulk (70% or more) of the district tribal population and the proportion of tribal to total population and the proportion of tribal to total population in this stratum was significantly greater than that of the district as a whole. The strata so formed were not always geographically contiguous. These tribal concentration strata are called STRATUM TYPE -1. Further, all the strata of Meghalaya, Mizoram, Nagaland, Arunachal Pradesh, Dadra & Nagar Haveli, Lakshdweep and Sikkim are also considered as stratum type-1. All the remaining strata in the rural sector (in any State/U.T.) were called stratum type -2.

General and special sample villages : There were two types of sample villages in this round. The first type was the general sample in which all enquiries were carried out. The second type was designated as "special sample villages" in which only schedules 3.1, 29.1, 29.2 and 29.3 were canvassed. The special sampleswere intended for augmenting the general sample for the tribal enquiry. These special sample villages were selected only from the tribal concentration strata (stratum type 1 ) of the 16 States and the U.T. OF Andaman & Nicobar Islands 1) of 16 States and the U.T. of Andaman & Nicobar Islands. There were no special sample villages in the remaining States/U.T.'s. The special samples were called sample type-1 and the general samples, sample type-2.

Schedule type 29.3 was canvassed in the general and special sample villages to tribal strata only. Four households were selected from the frame of non-scheduled tribe households in each of the villages of stratum type 1. In large special sample villages, the distribution of sample households was 2 each from area type 1 and area type 2, Schedule 29.3 was not be canvassed in the urban sector.

Detailed procedures of samp[ling may be seen in INSTRUCTIONS TO FIELD STAFF : VOLUME I attached as external resource.

Sampling deviation

There was no deviation from the original sample deviation.

Mode of data collection

Face-to-face [f2f]

Research instrument

Schedule 29.3 consisted of the following blocks :

Block 1 : identification of sample household Block 2 : particulars of field operations Block 3 : remarks by investigator Block 4 : remarks by supervisory officer (s) Block 5 : household characteristics Block 6 : demographic and migration particulars of household members Block 7 : usual and current week activity particulars Block 8 : particulars of land owned and possessed activity on the date of survey Block 9 : particulars of disposal of land during last 5 years Block 10 : inventory of assets owned on the date of survey. Block 11 : particulars of cash dues and grain & other commodity dues payable by the household on the date of survey and transaction of loans during last 365 days.

Questionaire is published in English language.

Abstract

In pursuance of the recommendations made by the Governing Council (G.C.) of the National Sample Survey Organization (NSSO) in its 44th meeting held on 16 January 1987 to undertake a comprehensive survey on the socio-economic conditions of the tribal people in the 44th round (July 1988 - June 1989) of NSS, various schedules of enquiries on the subject were drawn up and tested in the field through a try-out survey. The schedules were discussed in details in the meetings of the Working Groups (W.G) set up by the G.C., NSSO for the NSS 44th round. In the light of the experiences gained through the try-out survey, the schedules of enquiry were finalized by the W.G. and subsequently approved by the G.C. of the NSSO in its 45th meeting held on 29 December 1987.

Schedules of investigation : In order to study the living conditions of tribals, it is, probably, imperative to know the environment in which the tribals live. Hence a village schedule (schedule type 3.1) was canvassed to collect information at village/hamlet level on the extent of availability of various facilities which have direct or indirect bearing on tribal life.

However, the major thrust in collecting information on living conditions of tribals will, obviously, be at the household level. There are various aspects of tribal life which need to be studied. From the point of view of analysis it would have, probably, been ideal to collect all the necessary information from the same set of sample households in an integrated manner. But as the factors are numerous, any attempt to accommodate all the items of information in a single schedule of enquiry will make the schedule unwieldy. It was, thus, decided to frame two schedules of enquiries for collecting information from the tribal households - one mainly on socio-economic aspects relating to the level of living of tribals (schedule type - 29.1) and the other on economic and enterprise aspects of the tribal households (schedule type 29.2).

Further, with a view to studying the problems of land alienation faced by the tribal population due to in-migration of non-tribals in the tribal areas and also to assess the differences in the socio-economic standard of living between the tribals and the non-tribals, a schedule of enquiry (schedule type 29.3) was designed for collecting information from the non-tribal households residing in the tribal areas.

In short, the following four schedules of enquiries have been framed for the tribal survey:

(i) Village schedule 3.1 : General information on village characteristics (ii) Household schedule 29.1 : Level of living of tribals (iii) Household schedule 29.2 :Economic activity of the tribals (iv) Household schedule 29.3 : Particulars of migration and ownership of land by non-tribals.

Here in this study the focus is Household schedule 29.1: Level of living of tribals.The object of the enquiry on the living condition of the tribal population carried out in the present round was to throw light on as many aspects as possible of the tribal population of this country. They will relate to aspects of their “level of the living” including demographic and activity particulars, family expenditure etc. as well as to their entrepreneurial activities.

Geographic coverage

National, State, Urban, Rural

Analysis unit

Households

Universe

All tribles Households within country

Kind of data

Sample survey data [ssd]

Sampling procedure

The sample design is, as usual, stratified two-stage with the census village as the first stage unit in the rural sector and UFS block as the first stage unit in the urban sector. The second stage units were households for all schedules.The sample design in the rural sector was decided with a view to providing good estimates for the tribal enquiry. Except in the north-eastern region, the tribal population was concentrated in some districts within the states having considerable tribal population and even in those districts they were found to be unevenly distributed geographically. Therefore special stratification and selection procedures were adopted not only to net sufficient number of tribal households in the sample but also to improve the design in general for the tribal enquiry.

Sampling frame of villages: The list of 1981 census villages constitute the sampling frame for selection of villages in most districts. However in Assam (where '81 census was not done) and a few districts of some other states (where the available lists of villages were not satisfactory), 1971 census village lists were used as frame.

Stratification : In Haryana, Jammu & Kashmir, Punjab, Chandigarh, Delhi, Goa, Daman & Diu and Pondicherry where there were practically no tribal population, the strata used in NSS 43rd round were retained. In Meghalaya, Mizoram, Nagaland, Arunachal Pradesh, Sikkim, Dadra and Nagar Haveli and Lakshadweep also the strata of 43rd round were retained because of the high percentage of ST. population in these States/U.T.'s. (The strata of 43rd round have been retained in the case of Sikkim as the distribution of tribal population is more or less uniform over all the districts).In the remaining states fresh stratification was carried out as described below.

In these states all districts accounting for the bulk of the states's tribal population were selected for formation of strata with concentration of tribal population. Besides these districts, tribal concentration strata were demarcated also in some other districts with relatively small tribal population in order to ensure coverage of as many different ethnic groups as possible.

Within each district so identified for formation of tribal concentration strata, the tehsils with relatively high concentration of tribal population, together constituted one stratum. These tehsils were selectd in such a way that together they accounted for the bulk (70% or more) of the district tribal population and the proportion of tribal to total population and the proportion of tribal to total population in this stratum was significantly greater than that of the district as a whole. The strata so formed were not always geographically contiguous. These tribal concentration strata are called STRATUM TYPE -1. Further, all the strata of Meghalaya, Mizoram, Nagaland, Arunachal Pradesh, Dadra & Nagar Haveli, Lakshdweep and Sikkim are also considered as stratum type-1. All the remaining strata in the rural sector (in any State/U.T.) were called stratum type -2.

General and special sample villages : There were two types of sample villages in this round. The first type was the general sample in which all enquiries were carried out. The second type was designated as "special sample villages" in which only schedules 3.1, 29.1, 29.2 and 29.3 were canvassed. The special sampleswere intended for augmenting the general sample for the tribal enquiry. These special sample villages were selected only from the tribal concentration strata (stratum type 1 ) of the 16 States and the U.T. OF Andaman & Nicobar Islands 1) of 16 States and the U.T. of Andaman & Nicobar Islands. There were no special sample villages in the remaining States/U.T.'s. The special samples were called sample type-1 and the general samples, sample type-2.

Schedules 29.1 was canvassed both in rural and urban sectors. Six households each from the frame of schedules tribe households in the villages of special as well as general samples falling in the tribal strata were canvassed. On the other hand only two households were selected from the sample villages of stratus type 2 as well as from each sample block in urban areas of the schedules 29.1. In the special sample villages requiring hamlet group formation, the hamlet group having maximum number of tribal population will be designated as area type 1 and the other hamlet group selected at random from the remaining hamlet groups will be called area type 2. From the area type 1, 4 tribal households will be selected, while only 2 tribal households will be sampled from area type 2 for he schedule - 29.1.

Detailed procedures of samp[ling may be seen in INSTRUCTIONS TO FIELD STAFF : VOLUME I attached as external resource.

Sampling deviation

There was no deviation from the original sample deviation.

Mode of data collection

Face-to-face [f2f]

Research instrument

Schedule 29.1 consisted of the following blocks :

Block 1 : identification of sample household

Block 2 : particulars of field operations

Block 3 : remarks by investigator

Block 4 : remarks by supervisory officers(s)

Block 5 : household characteristics

Block 6 : demographic, personal characteristics and migration particulars of household members.

Block 7 : particulars of education

Block 8 : usual and current week activity particulars

Block 9 : quality and value of purchase of selected commodities

Block 10: particulars of health care and morbidity

Block 11 : particulars of ceremonies performed by the household

Block 12 : cash purchase and consumption of food, tobacco, intoxicants, fuel & light, clothing and footwear

Block 13 : expenditure on miscellaneous goods and services, rents and taxes and durable goods for domestic use. Block 14 : particulars of dwelling unit.

Relative concentration of the Northern California region's American Indian population. The variable AIANALN records all individuals who select American Indian or Alaska Native as their SOLE racial identity in response to the Census questionnaire, regardless of their response to the Hispanic ethnicity question. Both Hispanic and non-Hispanic in the Census questionnaire are potentially associated with American Indian / Alaska Native race alone. IMPORTANT: this self reported ancestry and Tribal membership are distinct identities and one does not automatically imply the other. These data should not be interpreted as a distribution of "Tribal people." Numerous Rancherias in the Northern California region account for the wide distribution of very to extremely high concentrations of American Indians outside the San Francisco Bay Area.

"Relative concentration" is a measure that compares the proportion of population within each Census block group data unit that identify as American Indian / Alaska Native alone to the proportion of all people that live within the 1,207 block groups in the Northern California RRK region that identify as American Indian / Alaska native alone. Example: if 5.2% of people in a block group identify as AIANALN, the block group has twice the proportion of AIANALN individuals compared to the Northern California RRK region (2.6%), and more than three times the proportion compared to the entire state of California (1.6%). If the local proportion is twice the regional proportion, then AIANALN individuals are highly concentrated locally.

Tribal or indigenous communities have unique health behaviors, challenges, and inequities that nationally representative surveys cannot document. Odisha has one of India’s largest and most diverse tribal populations, constituting more than a fifth of the state. State and tribe-specific health data generation is recommended in India’s national roadmap of tribal health. The Odisha tribal family health survey (OTFHS) aims to describe and compare the health status of tribal communities in the state of Odisha and to estimate the prevalence of key maternal-child health indicators and chronic diseases. This paper summarizes the methodology, protocols, and tools used in this survey. This is a population-based cross-sectional survey with a multistage random sampling design in 13 (tribal sub-plan areas) districts of Odisha, India. We will include participants of all age groups and gender who belong to tribal communities. The sample size was calculated for each tribe and aggregated to 40,921, which will be collected from 10,230 households spread over 341 clusters. The survey data will be collected electronically in modules consisting of Village, Household, and Individual level questionnaires. The age-group-specific questionnaires were adapted from other national family health surveys with added constructs related to specific health issues of tribal communities, including-critical indicators related to infectious and non-communicable diseases, multimorbidity, nutrition, healthcare-seeking behavior, self-rated health, psycho-social status, maternal and child health and geriatric health. A battery of laboratory investigations will be conducted at the household level and the central laboratory. The tests include liver function tests, kidney function tests, lipid profile, iron profile, and seroprevalence of scrub typhus and hepatitis infections. The datasets from household questionnaires, field measurements and tests and laboratory reports will be connected using a common unique ID in the database management system (DBMS) built for this survey. Robust quality control measures have been built into each step of the survey. The study examines the data focused on different aspects of family health, including reproductive health, adolescent and child health, gender issues in the family, ageing, mental health, and other social problems in a family. Multistage random sampling has been used in the study to enable comparison between tribes. The anthropometric measurements and biochemical tests would help to identify the indicators of chronic diseases among various age groups of the population.

Tribal Block GroupsThis feature layer, utilizing National Geospatial Data Asset (NGDA) data from the U.S. Census Bureau (USCB), depicts American Indian tribal block groups. Per the USCB, "a tribal block group is a cluster of census tabulation blocks within a single tribal census tract delineated by American Indian tribal participants or the Census Bureau for the purpose of presenting demographic data on their reservation and/or off-reservation trust land. The tribal block groups are defined independently of the standard county-based block group delineation. For federally recognized American Indian Tribes with reservations and/or off-reservation trust lands with a population less than 1,200, a single tribal block group is defined. Qualifying reservations and/or off-reservation trust lands with a population greater than 1,200 could define additional tribal block groups within their area without regard to the standard block group configuration."Tribal Block Groups in the SouthwestData currency: This cached Esri federal service is checked weekly for updates from its enterprise federal source (Tribal Block Groups) and will support mapping, analysis, data exports and OGC API – Feature access.NGDAID: 94 (Series Information for Tribal Block Group National TIGER/Line Shapefiles, Current)OGC API Features Link: (Tribal Block Groups - OGC Features) copy this link to embed it in OGC Compliant viewersFor more information, please visit: 2020 Census Participant Statistical Areas Program (PSAP)For feedback please contact: Esri_US_Federal_Data@esri.comNGDA Data SetThis data set is part of the NGDA Governmental Units, and Administrative and Statistical Boundaries Theme Community. Per the Federal Geospatial Data Committee (FGDC), this theme is defined as the "boundaries that delineate geographic areas for uses such as governance and the general provision of services (e.g., states, American Indian reservations, counties, cities, towns, etc.), administration and/or for a specific purpose (e.g., congressional districts, school districts, fire districts, Alaska Native Regional Corporations, etc.), and/or provision of statistical data (census tracts, census blocks, metropolitan and micropolitan statistical areas, etc.). Boundaries for these various types of geographic areas are either defined through a documented legal description or through criteria and guidelines. Other boundaries may include international limits, those of federal land ownership, the extent of administrative regions for various federal agencies, as well as the jurisdictional offshore limits of U.S. sovereignty. Boundaries associated solely with natural resources and/or cultural entities are excluded from this theme and are included in the appropriate subject themes."For other NGDA Content: Esri Federal Datasets

This is a series-level metadata record. The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). The MTDB represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line shapefile is designed to stand alone as an independent data set, or they can be combined to cover the entire nation. A tribal block group is a cluster of census tabulation blocks within a single tribal census tract delineated by American Indian tribal participants or the Census Bureau for the purpose of presenting demographic data on their reservation and/or off-reservation trust land. The tribal block groups are defined independently of the standard county-based block group delineation. For federally recognized American Indian Tribes with reservations and/or off-reservation trust lands with a population less than 1,200, a single tribal block group is defined. Qualifying reservations and/or off-reservation trust lands with a population greater than 1,200 could define additional tribal block groups within their area without regard to the standard block group configuration. Tribal block groups do not necessarily contain tabulation blocks always beginning with the same number and could contain seemingly duplicate block numbers. Tabulation block numbers are still assigned by using standard block groups, not the tribal block groups. To better identify tribal block groups, the letter code range A through K (except I, which could be confused with a number 1) is used uniquely within each tribal census tract. The boundaries of tribal block groups are those delineated through the Participant Statistical Areas Program (PSAP) for the 2020 Census.

Digital polygon dataset of Tribal Population Distribution per District of Chittagong Hill Tracts of Bangladesh. This dataset is basic vector layer based on LGED Administrative Base Map and Bangladesh Bureau of Statistics (BBS) 2001.