This collection comprises census tract-level data for California from the 1970 Census. The data contain 20-, 15-, and 5-percent sample population and housing characteristics including education, occupation, income, citizenship, vocational training, and household equipment and facilities.

Graph and download economic data for Resident Population in Orange County, CA (CAORAN7POP) from 1970 to 2024 about Orange County, CA; Los Angeles; residents; CA; population; and USA.

Graph and download economic data for Resident Population in Los Angeles County, CA (CALOSA7POP) from 1970 to 2024 about Los Angeles County, CA; Los Angeles; residents; CA; population; and USA.

This data collection includes housing data by census tract for San Diego County in 1970. Sample counts (5%, 15% and 20%) are derived from the Census of Population and Housing, 1970: Summary Tape File 4A: Housing. Housing characteristics include housing value, number of housing units in structure, number of rooms in housing unit, year structure was built, occupancy/vacancy status, tenure, rent, type of heating fuel, source of water, and presence of an air conditioner and other home appliances. Counts are available for the total, Negro, and Spanish American populations. Negros are defined as a racial category by the Census Bureau. In California, Spanish Americans include "Persons of Spanish language or Spanish surname". The California state 4A data file was processed with PERL and SPSS by the Social Science Data Collection (SSDC) staff of the University of California, San Diego from Census Bureau data processed by DUALabs, Inc. and archived at the Odum Institute. PERL script concatenated record type codes and output six data files that match the record types described in the codebook: tables 001-040, tables 041-107, tables 108-119, tables 120-130, tables 131-152 and Spanish American tables 153-200. These si x files were subsequently processed with SPSS to extract tracts for San Diego County and recompute some aggregate housing value data content. Users may browse a list of data variables (tables and cells) included in these six data files. The Census Bureau produced printed reports for 1970 Summary Tape File 4A. The UCSD Geisel Library maintains printed reports and census tract maps in 1970 Census of Population and Housing Census Tracts, San Diego, Calif. (SSH Docs US Stacks C 3.223/11:970/188).

VITAL SIGNS INDICATOR Population (LU1)

FULL MEASURE NAME Population estimates

LAST UPDATED October 2019

DESCRIPTION Population is a measurement of the number of residents that live in a given geographical area, be it a neighborhood, city, county or region.

DATA SOURCES U.S Census Bureau: Decennial Census No link available (1960-1990) http://factfinder.census.gov (2000-2010)

California Department of Finance: Population and Housing Estimates Table E-6: County Population Estimates (1961-1969) Table E-4: Population Estimates for Counties and State (1971-1989) Table E-8: Historical Population and Housing Estimates (2001-2018) Table E-5: Population and Housing Estimates (2011-2019) http://www.dof.ca.gov/Forecasting/Demographics/Estimates/

U.S. Census Bureau: Decennial Census - via Longitudinal Tract Database Spatial Structures in the Social Sciences, Brown University Population Estimates (1970 - 2010) http://www.s4.brown.edu/us2010/index.htm

U.S. Census Bureau: American Community Survey 5-Year Population Estimates (2011-2017) http://factfinder.census.gov

U.S. Census Bureau: Intercensal Estimates Estimates of the Intercensal Population of Counties (1970-1979) Intercensal Estimates of the Resident Population (1980-1989) Population Estimates (1990-1999) Annual Estimates of the Population (2000-2009) Annual Estimates of the Population (2010-2017) No link available (1970-1989) http://www.census.gov/popest/data/metro/totals/1990s/tables/MA-99-03b.txt http://www.census.gov/popest/data/historical/2000s/vintage_2009/metro.html https://www.census.gov/data/datasets/time-series/demo/popest/2010s-total-metro-and-micro-statistical-areas.html

CONTACT INFORMATION vitalsigns.info@bayareametro.gov

METHODOLOGY NOTES (across all datasets for this indicator) All legal boundaries and names for Census geography (metropolitan statistical area, county, city, and tract) are as of January 1, 2010, released beginning November 30, 2010, by the U.S. Census Bureau. A Priority Development Area (PDA) is a locally-designated area with frequent transit service, where a jurisdiction has decided to concentrate most of its housing and jobs growth for development in the foreseeable future. PDA boundaries are current as of August 2019. For more information on PDA designation see http://gis.abag.ca.gov/website/PDAShowcase/.

Population estimates for Bay Area counties and cities are from the California Department of Finance, which are as of January 1st of each year. Population estimates for non-Bay Area regions are from the U.S. Census Bureau. Decennial Census years reflect population as of April 1st of each year whereas population estimates for intercensal estimates are as of July 1st of each year. Population estimates for Bay Area tracts are from the decennial Census (1970 -2010) and the American Community Survey (2008-2012 5-year rolling average; 2010-2014 5-year rolling average; 2013-2017 5-year rolling average). Estimates of population density for tracts use gross acres as the denominator.

Population estimates for Bay Area PDAs are from the decennial Census (1970 - 2010) and the American Community Survey (2006-2010 5 year rolling average; 2010-2014 5-year rolling average; 2013-2017 5-year rolling average). Population estimates for PDAs are derived from Census population counts at the tract level for 1970-1990 and at the block group level for 2000-2017. Population from either tracts or block groups are allocated to a PDA using an area ratio. For example, if a quarter of a Census block group lies with in a PDA, a quarter of its population will be allocated to that PDA. Tract-to-PDA and block group-to-PDA area ratios are calculated using gross acres. Estimates of population density for PDAs use gross acres as the denominator.

Annual population estimates for metropolitan areas outside the Bay Area are from the Census and are benchmarked to each decennial Census. The annual estimates in the 1990s were not updated to match the 2000 benchmark.

The following is a list of cities and towns by geographical area: Big Three: San Jose, San Francisco, Oakland Bayside: Alameda, Albany, Atherton, Belmont, Belvedere, Berkeley, Brisbane, Burlingame, Campbell, Colma, Corte Madera, Cupertino, Daly City, East Palo Alto, El Cerrito, Emeryville, Fairfax, Foster City, Fremont, Hayward, Hercules, Hillsborough, Larkspur, Los Altos, Los Altos Hills, Los Gatos, Menlo Park, Mill Valley, Millbrae, Milpitas, Monte Sereno, Mountain View, Newark, Pacifica, Palo Alto, Piedmont, Pinole, Portola Valley, Redwood City, Richmond, Ross, San Anselmo, San Bruno, San Carlos, San Leandro, San Mateo, San Pablo, San Rafael, Santa Clara, Saratoga, Sausalito, South San Francisco, Sunnyvale, Tiburon, Union City, Vallejo, Woodside Inland, Delta and Coastal: American Canyon, Antioch, Benicia, Brentwood, Calistoga, Clayton, Cloverdale, Concord, Cotati, Danville, Dixon, Dublin, Fairfield, Gilroy, Half Moon Bay, Healdsburg, Lafayette, Livermore, Martinez, Moraga, Morgan Hill, Napa, Novato, Oakley, Orinda, Petaluma, Pittsburg, Pleasant Hill, Pleasanton, Rio Vista, Rohnert Park, San Ramon, Santa Rosa, Sebastopol, Sonoma, St. Helena, Suisun City, Vacaville, Walnut Creek, Windsor, Yountville Unincorporated: all unincorporated towns

This data collection includes a block subset of the Census of Population and Housing, 1970: Summary Tape File 3A for San Diego County, California. Block complete count (100% long form) tabulations are available in 38 population and housing tables. Complete count data for population includes tabulation of total population by race (white, Negro, and other) and sex, age and sex (21 age categories), and relationship to household head; population under 18 by relationship to household head and type of household. Complete count data for housing includes tabulation by access, basement, crowding, group quarters, kitchen facilities, occupied units, plumbing facilities, rental units, rooms, toilet facilities, value, race, and others. The San Diego block file also includes totals for census tracts. A list of all table cell counts (variables) is available for these data tabulations. The San Diego block data file was extracted and processed by the Social Science Data Collection (SSDC) staff of the University of California, San Diego from Census Bureau data processed by DUALabs, Inc. and archived at the Odum Institute. 1970 Summary Tape File 3A is also known as 1970 Summary File 3A and 1970 Summary Statistic File 3A. The Census Bureau produced printed reports for 1970 Summary Tape File 3A. The UCSD Geisel Library maintains two copies of printed block maps in Block Statistics: San Diego, Calif. Urbanized Area (SSH Docs US Stacks C 3.224/5:970/23). The printed reports are limited to 4 tables containing 24 table cells. These printed reports are the only source of block maps for these data.

Graph and download economic data for Resident Population in Sonoma County, CA (CASONO6POP) from 1970 to 2024 about Sonoma County, CA; Santa Rosa; residents; CA; population; and USA.

Mexico Population: Baja California Sur data was reported at 762.770 Person th in 2018. This records an increase from the previous number of 745.653 Person th for 2017. Mexico Population: Baja California Sur data is updated yearly, averaging 361.449 Person th from Dec 1970 (Median) to 2018, with 49 observations. The data reached an all-time high of 762.770 Person th in 2018 and a record low of 131.309 Person th in 1970. Mexico Population: Baja California Sur data remains active status in CEIC and is reported by National Population Council. The data is categorized under Global Database’s Mexico – Table MX.G002: Population: by State.

Mexico Population: Baja California data was reported at 3,492.294 Person th in 2018. This records an increase from the previous number of 3,433.349 Person th for 2017. Mexico Population: Baja California data is updated yearly, averaging 1,987.944 Person th from Dec 1970 (Median) to 2018, with 49 observations. The data reached an all-time high of 3,492.294 Person th in 2018 and a record low of 893.845 Person th in 1970. Mexico Population: Baja California data remains active status in CEIC and is reported by National Population Council. The data is categorized under Global Database’s Mexico – Table MX.G002: Population: by State.

VITAL SIGNS INDICATOR Population (LU1)

FULL MEASURE NAME
Population estimates

LAST UPDATED
February 2023

DESCRIPTION
Population is a measurement of the number of residents that live in a given geographical area, be it a neighborhood, city, county or region.

DATA SOURCE
California Department of Finance: Population and Housing Estimates - http://www.dof.ca.gov/Forecasting/Demographics/Estimates/
Table E-6: County Population Estimates (1960-1970)
Table E-4: Population Estimates for Counties and State (1970-2021)
Table E-8: Historical Population and Housing Estimates (1990-2010)
Table E-5: Population and Housing Estimates (2010-2021)

Bay Area Jurisdiction Centroids (2020) - https://data.bayareametro.gov/Boundaries/Bay-Area-Jurisdiction-Centroids-2020-/56ar-t6bs
Computed using 2020 US Census TIGER boundaries

U.S. Census Bureau: Decennial Census Population Estimates - http://www.s4.brown.edu/us2010/index.htm- via Longitudinal Tract Database Spatial Structures in the Social Sciences, Brown University
1970-2020

U.S. Census Bureau: American Community Survey (5-year rolling average; tract) - https://data.census.gov/
2011-2021
Form B01003

Priority Development Areas (Plan Bay Area 2050) - https://opendata.mtc.ca.gov/datasets/MTC::priority-development-areas-plan-bay-area-2050/about

CONTACT INFORMATION
vitalsigns.info@bayareametro.gov

METHODOLOGY NOTES (across all datasets for this indicator)
All historical data reported for Census geographies (metropolitan areas, county, city and tract) use current legal boundaries and names. A Priority Development Area (PDA) is a locally-designated area with frequent transit service, where a jurisdiction has decided to concentrate most of its housing and jobs growth for development in the foreseeable future. PDA boundaries are current as of December 2022.

Population estimates for Bay Area counties and cities are from the California Department of Finance, which are as of January 1st of each year. Population estimates for non-Bay Area regions are from the U.S. Census Bureau. Decennial Census years reflect population as of April 1st of each year whereas population estimates for intercensal estimates are as of July 1st of each year. Population estimates for Bay Area tracts are from the decennial Census (1970-2020) and the American Community Survey (2011-2021 5-year rolling average). Estimates of population density for tracts use gross acres as the denominator.

Population estimates for Bay Area tracts and PDAs are from the decennial Census (1970-2020) and the American Community Survey (2011-2021 5-year rolling average). Population estimates for PDAs are allocated from tract-level Census population counts using an area ratio. For example, if a quarter of a Census tract lies with in a PDA, a quarter of its population will be allocated to that PDA. Estimates of population density for PDAs use gross acres as the denominator. Note that the population densities between PDAs reported in previous iterations of Vital Signs are mostly not comparable due to minor differences and an updated set of PDAs (previous iterations reported Plan Bay Area 2040 PDAs, whereas current iterations report Plan Bay Area 2050 PDAs).

The following is a list of cities and towns by geographical area:

Big Three: San Jose, San Francisco, Oakland

Bayside: Alameda, Albany, Atherton, Belmont, Belvedere, Berkeley, Brisbane, Burlingame, Campbell, Colma, Corte Madera, Cupertino, Daly City, East Palo Alto, El Cerrito, Emeryville, Fairfax, Foster City, Fremont, Hayward, Hercules, Hillsborough, Larkspur, Los Altos, Los Altos Hills, Los Gatos, Menlo Park, Mill Valley, Millbrae, Milpitas, Monte Sereno, Mountain View, Newark, Pacifica, Palo Alto, Piedmont, Pinole, Portola Valley, Redwood City, Richmond, Ross, San Anselmo, San Bruno, San Carlos, San Leandro, San Mateo, San Pablo, San Rafael, Santa Clara, Saratoga, Sausalito, South San Francisco, Sunnyvale, Tiburon, Union City, Vallejo, Woodside

Inland, Delta and Coastal: American Canyon, Antioch, Benicia, Brentwood, Calistoga, Clayton, Cloverdale, Concord, Cotati, Danville, Dixon, Dublin, Fairfield, Gilroy, Half Moon Bay, Healdsburg, Lafayette, Livermore, Martinez, Moraga, Morgan Hill, Napa, Novato, Oakley, Orinda, Petaluma, Pittsburg, Pleasant Hill, Pleasanton, Rio Vista, Rohnert Park, San Ramon, Santa Rosa, Sebastopol, Sonoma, St. Helena, Suisun City, Vacaville, Walnut Creek, Windsor, Yountville

Unincorporated: all unincorporated towns

Mexico Population: Male: Baja California data was reported at 1,745.935 Person th in 2018. This records an increase from the previous number of 1,716.984 Person th for 2017. Mexico Population: Male: Baja California data is updated yearly, averaging 1,003.628 Person th from Dec 1970 (Median) to 2018, with 49 observations. The data reached an all-time high of 1,745.935 Person th in 2018 and a record low of 446.289 Person th in 1970. Mexico Population: Male: Baja California data remains active status in CEIC and is reported by National Population Council. The data is categorized under Global Database’s Mexico – Table MX.G002: Population: by State.

This dataset consists of modeled projections of land use and land cover and population for the State of California for the period 1970-2101. For the 1970-2001 period, we used the USGS's LUCAS model to "backcast" LULC, beginning with the 2001 initial conditions and ending with 1970. For future projections, the model was initialized in 2001 and run forward on an annual time step to 2100. In total 5 simulations were run with 10 Monte Carlo replications of each simulation. The simulations include: 1) Historical backcast from 2001-1970, 2) Business-as-usual (BAU) projection from 2001-2101, and 3) three modified BAU projections based on California Department of Finance population projections based on high, medium, and low growth rates.

Graph and download economic data for Resident Population in Shasta County, CA (CASHAS5POP) from 1970 to 2024 about Shasta County, CA; Redding; residents; CA; population; and USA.

Graph and download economic data for Resident Population in Calaveras County, CA (CACALA9POP) from 1970 to 2024 about Calaveras County, CA; residents; CA; population; and USA.

Mexico Population: Female: Baja California Sur data was reported at 374.710 Person th in 2018. This records an increase from the previous number of 366.168 Person th for 2017. Mexico Population: Female: Baja California Sur data is updated yearly, averaging 176.978 Person th from Dec 1970 (Median) to 2018, with 49 observations. The data reached an all-time high of 374.710 Person th in 2018 and a record low of 64.014 Person th in 1970. Mexico Population: Female: Baja California Sur data remains active status in CEIC and is reported by National Population Council. The data is categorized under Global Database’s Mexico – Table MX.G002: Population: by State.

Graph and download economic data for Population for Cambodia (POPTTLKHA148NRUG) from 1970 to 2019 about Cambodia and population.

Graph and download economic data for Resident Population in Ventura County, CA (CAVENT2POP) from 1970 to 2024 about Ventura County, CA; Oxnard; residents; CA; population; and USA.

Graph and download economic data for Resident Population in Marin County, CA (CAMARI5POP) from 1970 to 2024 about Marin County, CA; San Francisco; residents; CA; population; and USA.

Año Nuevo Island and the adjacent mainland host a large pinniped colony, including four different species: the northern elephant seal, northern sea lion, California sea lion, and harbor seal. Since 1967, researchers from the University of California, Santa Cruz, and the Smithsonian Institution have been doing regular counts of all individuals of all four throughout the colony; particular attention is focused on counts of breeding females and pups of the elephant seal and northern sea lion. The number of elephant seal pups born annually at Año Nuevo was below 200 in 1968, but grew steadily until 1995; since then it has stabilized at 2600-2800. The number of northern sea lion pups was as high as 350 yearly in the late 1970s, but has declined since. California sea lions have few pups at Año Nuevo, but they are the most numerous of the four species, with more than 10,000 observed on some occasions. Harbor seals breed routinely on the island, but in small numbers (and breeding females are shy and hard to count). A fifth species, the northern fur seal, was recorded on several occasions in the mid-1970s.

Allen's Hummingbird comprises two subspecies, one migratory (Selasphorus sasin sasin) and one non-migratory (S. s. sedentarius). The non-migratory subspecies, previously endemic to the California Channel Islands, apparently colonized the California mainland on the Palos Verdes Peninsula some time before 1970, and now breeds throughout coastal southern California. We sequenced and compared populations of mainland non-migratory Allen's Hummingbird to Channel Island populations from Santa Catalina, San Clemente, and Santa Cruz Island. We found no evidence of founder effects on the mainland population. Values of nucleotide diversity on the Channel Islands were lower than those on the mainland. There were low levels of divergence between the Channel Islands and the mainland, although Santa Cruz Island was the most genetically distinct. Ecological niche models showed that rainfall and temperature variables on the Channel Islands are similar in the Los Angeles basin, and predicted continued ex...