100+ datasets found
  1. Texas County Boundaries (line)

    • esri-san-antonio-office.hub.arcgis.com
    Updated Jul 19, 2016
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    Texas Department of Transportation (2016). Texas County Boundaries (line) [Dataset]. https://esri-san-antonio-office.hub.arcgis.com/datasets/TXDOT::texas-county-boundaries-line
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    Dataset updated
    Jul 19, 2016
    Dataset authored and provided by
    Texas Department of Transportationhttp://txdot.gov/
    Area covered
    Description

    This dataset was created by the Transportation Planning and Programming (TPP) Division of the Texas Department of Transportation (TxDOT) for planning and asset inventory purposes, as well as for visualization and general mapping. County boundaries were digitized by TxDOT using USGS quad maps, and converted to line features using the Feature to Line tool. This dataset depicts a generalized coastline.Date valid as of: February 2015Publish Date: February 2015Update Frequency: StaticSecurity Level: Public

  2. Texas County Boundaries Detailed

    • geoportal-mpo.opendata.arcgis.com
    • gis-txdot.opendata.arcgis.com
    • +1more
    Updated Aug 12, 2016
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    Texas Department of Transportation (2016). Texas County Boundaries Detailed [Dataset]. https://geoportal-mpo.opendata.arcgis.com/datasets/TXDOT::texas-county-boundaries-detailed
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    Dataset updated
    Aug 12, 2016
    Dataset authored and provided by
    Texas Department of Transportationhttp://txdot.gov/
    Area covered
    Description

    This dataset was created by TxDOT for internal purposes. TxDOT is not the authority for county boundary data for the state. These features were digitized by TxDOT from georeferenced USGS topo maps to enable the classification of roadway attributes for the purposes of satisfying federal and state reporting requirements, and to serve as a base layer for TxDOT's cartographic products. This version utilizes a detailed boundary along the Texas coast for depicting a realistic coastline.Use at your own risk. Update Frequency: As NeededSource: Texas General Land OfficeSecurity Level: PublicOwned by TxDOT: FalseRelated LinksData Dictionary PDF [Generated 2025/03/14]

  3. O

    Boundaries: State of Texas Counties

    • data.austintexas.gov
    • datahub.austintexas.gov
    • +1more
    Updated Jun 1, 2025
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    US Census (2025). Boundaries: State of Texas Counties [Dataset]. https://data.austintexas.gov/Locations-and-Maps/Boundaries-State-of-Texas-Counties/tnsq-nquk
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    csv, application/rssxml, application/geo+json, kmz, application/rdfxml, xml, tsv, kmlAvailable download formats
    Dataset updated
    Jun 1, 2025
    Dataset authored and provided by
    US Census
    License

    U.S. Government Workshttps://www.usa.gov/government-works
    License information was derived automatically

    Area covered
    Texas
    Description

    Cartographic Boundary Map provided the State of Texas Open Data Portal here: https://data.texas.gov/dataset/Texas-Counties-Cartographic-Boundary-Map/sw7f-2kkd/about_data

    Terms of Use This product is for informational purposes and may not have been prepared for or be suitable for legal, engineering, or surveying purposes. It does not represent an on-the-ground survey and represents only the approximate relative location of property boundaries. This product has been provided by the City of Austin via the US Census Bureau for the sole purpose of geographic reference. No warranty is made by the City of Austin regarding specific accuracy or completeness.

  4. d

    Texas-Harvey Basemap - Addresses and Boundaries

    • search.dataone.org
    • hydroshare.org
    • +1more
    Updated Dec 30, 2023
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    David Arctur; David Maidment (2023). Texas-Harvey Basemap - Addresses and Boundaries [Dataset]. http://doi.org/10.4211/hs.3e251d7d70884abd928d7023e050cbdc
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    Dataset updated
    Dec 30, 2023
    Dataset provided by
    Hydroshare
    Authors
    David Arctur; David Maidment
    Area covered
    Description

    This site provides access to download an ArcGIS geodatabase or shapefiles for the 2017 Texas Address Database, compiled by the Center for Water and the Environment (CWE) at the University of Texas at Austin, with guidance and funding from the Texas Division of Emergency Management (TDEM). These addresses are used by TDEM to help anticipate potential impacts of serious weather and flooding events statewide. This is part of the Texas Water Model (TWM), a project to adapt the NOAA National Water Model [1] for use in Texas public safety. This database was compiled over the period from June 2016 to December 2017. A number of gaps remain (towns and cities missing address points), see Address Database Gaps spreadsheet below [4]. Additional datasets include administrative boundaries for Texas counties (including Federal and State disaster-declarations), Councils of Government, and Texas Dept of Public Safety Regions. An Esri ArcGIS Story Map [5] web app provides an interactive map-based portal to explore and access these data layers for download.

    The address points in this database include their "height above nearest drainage" (HAND) as attributes in meters and feet. HAND is an elevation model developed through processing by the TauDEM method [2], built on USGS National Elevation Data (NED) with 10m horizontal resolution. The HAND elevation data and 10m NED for the continental United States are available for download from the Texas Advanced Computational Center (TACC) [3].

    The complete statewide dataset contains about 9.28 million address points representing a population of about 28 million. The total file size is about 5GB in shapefile format. For better download performance, the shapefile version of this data is divided into 5 regions, based on groupings of major watersheds identified by their hydrologic unit codes (HUC). These are zipped by region, with no zipfile greater than 120mb: - North Tx: HUC1108-1114 (0.52 million address points) - DFW-East Tx: HUC1201-1203 (3.06 million address points) - Houston-SE Tx: HUC1204 (1.84 million address points) - Central Tx: HUC1205-1210 (2.96 million address points) - Rio Grande-SW Tx: HUC2111-1309 (2.96 million address points)

    Additional state and county boundaries are included (Louisiana, Mississippi, Arkansas), as well as disaster-declaration status.

    Compilation notes: The Texas Commission for State Emergency Communications (CSEC) provided the first 3 million address points received, in a single batch representing 213 of Texas' 254 counties. The remaining 41 counties were primarily urban areas comprising about 6.28 million addresses (totaling about 9.28 million addresses statewide). We reached the GIS data providers for these areas (see Contributors list below) through these emergency communications networks: Texas 9-1-1 Alliance, the Texas Emergency GIS Response Team (EGRT), and the Texas GIS 9-1-1 User Group. The address data was typically organized in groupings of counties called Councils of Governments (COG) or Regional Planning Commissions (RPC) or Development Councils (DC). Every county in Texas belongs to a COG, RPC or DC. We reconciled all counties' addresses to a common, very simple schema, and merged into a single geodatabase.

    November 2023 updates: In 2019, TNRIS took over maintenance of the Texas Address Database, which is now a StratMap program updated annually [6]. In 2023, TNRIS also changed its name to the Texas Geographic Information Office (TxGIO). The datasets available for download below are not being updated, but are current as of the time of Hurricane Harvey.

    References: [1] NOAA National Water Model [https://water.noaa.gov/map] [2] TauDEM Downloads [https://hydrology.usu.edu/taudem/taudem5/downloads.html] [3] NFIE Continental Flood Inundation Mapping - Data Repository [https://web.corral.tacc.utexas.edu/nfiedata/] [4] Address Database Gaps, Dec 2017 (download spreadsheet below) [5] Texas Address and Base Layers Story Map [https://www.hydroshare.org/resource/6d5c7dbe0762413fbe6d7a39e4ba1986/] [6] TNRIS/TxGIO StratMap Address Points data downloads [https://tnris.org/stratmap/address-points/]

  5. O

    County Map - StratMap_County_poly

    • data.texas.gov
    Updated May 8, 2014
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    (2014). County Map - StratMap_County_poly [Dataset]. https://data.texas.gov/dataset/County-Map-StratMap_County_poly/m3yf-ffwm
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    csv, tsv, application/rdfxml, application/rssxml, kmz, application/geo+json, xml, kmlAvailable download formats
    Dataset updated
    May 8, 2014
    Description

    Map of counties in Texas.

  6. O

    Texas Counties Centroid Map

    • data.texas.gov
    • s.cnmilf.com
    • +1more
    Updated Apr 8, 2021
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    (2021). Texas Counties Centroid Map [Dataset]. https://data.texas.gov/dataset/Texas-Counties-Centroid-Map/ups3-9e8m
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    tsv, xml, csv, application/rdfxml, application/rssxml, application/geo+json, kmz, kmlAvailable download formats
    Dataset updated
    Apr 8, 2021
    Area covered
    Texas
    Description

    Texas county centroid latitude and longitude map data.

  7. K

    Collin County, Texas County Boundaries

    • koordinates.com
    csv, dwg, geodatabase +6
    + more versions
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    Collin County, Texas, Collin County, Texas County Boundaries [Dataset]. https://koordinates.com/layer/18046-collin-county-texas-county-boundaries/
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    geopackage / sqlite, pdf, shapefile, csv, mapinfo mif, kml, geodatabase, mapinfo tab, dwgAvailable download formats
    Dataset authored and provided by
    Collin County, Texas
    Area covered
    Description

    Geospatial data about Collin County, Texas County Boundaries. Export to CAD, GIS, PDF, CSV and access via API.

  8. K

    Fort Worth, Texas County Boundaries

    • koordinates.com
    csv, dwg, geodatabase +6
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    City of Forth Worth, Texas, Fort Worth, Texas County Boundaries [Dataset]. https://koordinates.com/layer/9780-fort-worth-texas-county-boundaries/
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    geopackage / sqlite, mapinfo mif, pdf, geodatabase, shapefile, kml, mapinfo tab, dwg, csvAvailable download formats
    Dataset authored and provided by
    City of Forth Worth, Texas
    Area covered
    Description

    This layer is sourced from mapit.fortworthtexas.gov.

  9. d

    BASE MAP DATASET, JONES COUNTY, TEXAS, USA.

    • datadiscoverystudio.org
    Updated Nov 14, 2017
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    (2017). BASE MAP DATASET, JONES COUNTY, TEXAS, USA. [Dataset]. http://datadiscoverystudio.org/geoportal/rest/metadata/item/217bb9be45a34c7b8b96781f019a3eb0/html
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    Dataset updated
    Nov 14, 2017
    Area covered
    United States
    Description

    description: Basemap datasets comprise six of the seven FGDC themes of geospatial data that are used by most GIS applications (Note: the seventh framework theme, orthographic imagery, is packaged in a separate NFIP Metadata Profile): cadastral, geodetic control, governmental unit, transportation, general structures, hydrography (water areas & lines. These data include an encoding of the geographic extent of the features and a minimal number of attributes needed to identify and describe the features. (Source: Circular A16, p. 13); abstract: Basemap datasets comprise six of the seven FGDC themes of geospatial data that are used by most GIS applications (Note: the seventh framework theme, orthographic imagery, is packaged in a separate NFIP Metadata Profile): cadastral, geodetic control, governmental unit, transportation, general structures, hydrography (water areas & lines. These data include an encoding of the geographic extent of the features and a minimal number of attributes needed to identify and describe the features. (Source: Circular A16, p. 13)

  10. d

    2019 Cartographic Boundary KML, 2010 Urban Areas (UA) within 2010 County and...

    • catalog.data.gov
    Updated Jan 15, 2021
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    (2021). 2019 Cartographic Boundary KML, 2010 Urban Areas (UA) within 2010 County and Equivalent for Texas, 1:500,000 [Dataset]. https://catalog.data.gov/dataset/2019-cartographic-boundary-kml-2010-urban-areas-ua-within-2010-county-and-equivalent-for-texas-
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    Dataset updated
    Jan 15, 2021
    Description

    The 2019 cartographic boundary KMLs are simplified representations of selected geographic areas from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). These boundary files are specifically designed for small-scale thematic mapping. When possible, generalization is performed with the intent to maintain the hierarchical relationships among geographies and to maintain the alignment of geographies within a file set for a given year. Geographic areas may not align with the same areas from another year. Some geographies are available as nation-based files while others are available only as state-based files. The records in this file allow users to map the parts of Urban Areas that overlap a particular county. After each decennial census, the Census Bureau delineates urban areas that represent densely developed territory, encompassing residential, commercial, and other nonresidential urban land uses. In general, this territory consists of areas of high population density and urban land use resulting in a representation of the ""urban footprint."" There are two types of urban areas: urbanized areas (UAs) that contain 50,000 or more people and urban clusters (UCs) that contain at least 2,500 people, but fewer than 50,000 people (except in the U.S. Virgin Islands and Guam which each contain urban clusters with populations greater than 50,000). Each urban area is identified by a 5-character numeric census code that may contain leading zeroes. The primary legal divisions of most states are termed counties. In Louisiana, these divisions are known as parishes. In Alaska, which has no counties, the equivalent entities are the organized boroughs, city and boroughs, municipalities, and for the unorganized area, census areas. The latter are delineated cooperatively for statistical purposes by the State of Alaska and the Census Bureau. In four states (Maryland, Missouri, Nevada, and Virginia), there are one or more incorporated places that are independent of any county organization and thus constitute primary divisions of their states. These incorporated places are known as independent cities and are treated as equivalent entities for purposes of data presentation. The District of Columbia and Guam have no primary divisions, and each area is considered an equivalent entity for purposes of data presentation. The Census Bureau treats the following entities as equivalents of counties for purposes of data presentation: Municipios in Puerto Rico, Districts and Islands in American Samoa, Municipalities in the Commonwealth of the Northern Mariana Islands, and Islands in the U.S. Virgin Islands. The entire area of the United States, Puerto Rico, and the Island Areas is covered by counties or equivalent entities. The generalized boundaries for counties and equivalent entities are as of January 1, 2010.

  11. K

    Richardson, Texas County Boundary

    • koordinates.com
    csv, dwg, geodatabase +6
    Updated Mar 14, 2017
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    City of Richardson, Texas (2017). Richardson, Texas County Boundary [Dataset]. https://koordinates.com/layer/31830-richardson-texas-county-boundary/
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    dwg, csv, geodatabase, mapinfo tab, shapefile, kml, pdf, mapinfo mif, geopackage / sqliteAvailable download formats
    Dataset updated
    Mar 14, 2017
    Dataset authored and provided by
    City of Richardson, Texas
    Area covered
    Description

    Geospatial data about Richardson, Texas County Boundary. Export to CAD, GIS, PDF, CSV and access via API.

  12. H

    Inundation Mapping, Harris County, Texas

    • hydroshare.org
    zip
    Updated Dec 8, 2018
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    Julian Plough (2018). Inundation Mapping, Harris County, Texas [Dataset]. https://www.hydroshare.org/resource/8933c8b5ed9a4e8db8f6832ec14d3b47
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    zip(13.0 MB)Available download formats
    Dataset updated
    Dec 8, 2018
    Dataset provided by
    HydroShare
    Authors
    Julian Plough
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Area covered
    Harris County, Texas
    Description

    This project will take USGS gauge height readings and map corresponding inundation areas

  13. QuickFacts: Texas

    • touringtexas.com
    • shutdown.census.gov
    • +1more
    csv
    + more versions
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    United States Census Bureau, QuickFacts: Texas [Dataset]. http://www.touringtexas.com/miscdisplay.php?ID=11
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    csvAvailable download formats
    Dataset authored and provided by
    United States Census Bureauhttp://census.gov/
    License

    CC0 1.0 Universal Public Domain Dedicationhttps://creativecommons.org/publicdomain/zero/1.0/
    License information was derived automatically

    Area covered
    Texas
    Description

    U.S. Census Bureau QuickFacts statistics for Texas. QuickFacts data are derived from: Population Estimates, American Community Survey, Census of Population and Housing, Current Population Survey, Small Area Health Insurance Estimates, Small Area Income and Poverty Estimates, State and County Housing Unit Estimates, County Business Patterns, Nonemployer Statistics, Economic Census, Survey of Business Owners, Building Permits.

  14. K

    Fort Bend County, Texas County Boundary

    • koordinates.com
    csv, dwg, geodatabase +6
    Updated Oct 4, 2018
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    Fort Bend County, Texas (2018). Fort Bend County, Texas County Boundary [Dataset]. https://koordinates.com/layer/98193-fort-bend-county-texas-county-boundary/
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    dwg, csv, geodatabase, mapinfo mif, pdf, shapefile, kml, geopackage / sqlite, mapinfo tabAvailable download formats
    Dataset updated
    Oct 4, 2018
    Dataset authored and provided by
    Fort Bend County, Texas
    Area covered
    Description

    Polygon vector map data covering county boundaries for Fort Bend County, Texas containing 1 feature.

    Boundary GIS (Geographic Information System) data is spatial information that delineates the geographic boundaries of specific geographic features. This data typically includes polygons representing the outlines of these features, along with attributes such as names, codes, and other relevant information

    Boundary GIS data is used for a variety of purposes across multiple industries, including urban planning, environmental management, public health, transportation, and business analysis.

    Available for viewing and sharing as a map in a Koordinates map viewer. This data is also available for export to DWG for CAD, PDF, KML, CSV, and GIS data formats, including Shapefile, MapInfo, and Geodatabase.

  15. d

    Data from: Helicopter electromagnetic and magnetic survey data and maps,...

    • catalog.data.gov
    • data.usgs.gov
    • +3more
    Updated Jul 6, 2024
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    U.S. Geological Survey (2024). Helicopter electromagnetic and magnetic survey data and maps, northern Bexar County, Texas [Dataset]. https://catalog.data.gov/dataset/helicopter-electromagnetic-and-magnetic-survey-data-and-maps-northern-bexar-county-texas
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    Dataset updated
    Jul 6, 2024
    Dataset provided by
    United States Geological Surveyhttp://www.usgs.gov/
    Area covered
    Bexar County, Texas
    Description

    Flight-line data release for a helicopter electromagnetic (HEM) and magnetic geophysical survey flown in early December 2003, in Northern Bexar County, Texas. The U.S. Geological Survey (USGS) contracted the survey to Fugro Airborne of Toronto, Canada. Data include coordinates in UTM zone 14 meters, longitude and latitude WGS84, and latitude and longitude (degrees, minutes, and decimal seconds) NAD27.

  16. K

    Houston County Boundaries

    • koordinates.com
    csv, dwg, geodatabase +6
    Updated Feb 3, 2023
    + more versions
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    City of Houston, Texas (2023). Houston County Boundaries [Dataset]. https://koordinates.com/layer/112438-houston-county-boundaries/
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    geopackage / sqlite, mapinfo mif, csv, dwg, shapefile, geodatabase, mapinfo tab, kml, pdfAvailable download formats
    Dataset updated
    Feb 3, 2023
    Dataset authored and provided by
    City of Houston, Texas
    Area covered
    Description

    Geospatial data about Houston County Boundaries. Export to CAD, GIS, PDF, CSV and access via API.

  17. Precincts - Datasets - Capitol Data Portal

    • data.capitol.texas.gov
    Updated Dec 9, 2019
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    data.capitol.texas.gov (2019). Precincts - Datasets - Capitol Data Portal [Dataset]. https://data.capitol.texas.gov/dataset/precincts
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    Dataset updated
    Dec 9, 2019
    Dataset provided by
    Texas Legislaturehttps://capitol.texas.gov/
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Description

    2024 General Election Voting Precincts County voting precincts are the geographic units established by county commissioners courts for the purpose of election administration. Precincts can be bounded by visible or nonvisible features. Council staff collect precinct boundary changes from county officials for each statewide primary and general election. Precincts24G.zip - 2024 general election (24G) voting precincts shapefile The precincts shapefile (.shp) is provided in a compressed file (.zip) format. Precincts24G_Districts.xlsx - Excel file with 24G precincts related to district plans for the 2024 elections The Excel file (.xlsx) relates 2024 general election voting precincts to congressional, state senate, state house, and State Board of Education districts. The file was created by converting each precinct polygon into a point location within the precinct and joining the points to district plans for the 2024 elections. The file contains the following fields: FIPS - Census County Code (txt) COUNTY - County Name (txt) PREC - Voting Precinct Name (txt) <--Note: This field is text PCTKEY - Unique Identifier (txt) PlanC2193 - Texas Congressional District (num) PlanH2316 - State House District (num) PlanS2168 - State Senate District (num) PlanE2106 - State Board of Education District (num) Previous vintages of collected precinct data from the 2020s are also available for download: Precincts24P.zip - 2024 primary election (24P) voting precincts shapefile Precincts24P_Districts.xlsx - Excel file with 24P precincts related to district plans for the 2024 elections Precincts22G.zip - 2022 general election (22G) voting precincts shapefile Precincts22G_Districts.xlsx - Excel file with 22G precincts related to district plans for the 2022 elections Precincts22P_20220518.zip - 2022 primary election (22P) voting precincts shapefile Precincts22P_Districts_20220518.xlsx - Excel file with 22P precincts related to district plans for the 2022 elections Precincts20G_2020.zip - 2020 general election (20G) voting precincts shapefile Precincts20G_Districts_2020.xlsx - Excel file with 20G precincts related to district plans for the 2020 elections The council's precinct collection should be used as a reference for determining the boundaries of county voting precincts. Please consult the appropriate county agency or county election official for additional information regarding voting precinct boundaries.

  18. o

    Data from: US County Boundaries

    • public.opendatasoft.com
    • smartregionidf.opendatasoft.com
    csv, excel, geojson +1
    Updated Jun 27, 2017
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    (2017). US County Boundaries [Dataset]. https://public.opendatasoft.com/explore/dataset/us-county-boundaries/
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    json, csv, excel, geojsonAvailable download formats
    Dataset updated
    Jun 27, 2017
    License

    https://en.wikipedia.org/wiki/Public_domainhttps://en.wikipedia.org/wiki/Public_domain

    Area covered
    United States
    Description

    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. The primary legal divisions of most states are termed counties. In Louisiana, these divisions are known as parishes. In Alaska, which has no counties, the equivalent entities are the organized boroughs, city and boroughs, municipalities, and for the unorganized area, census areas. The latter are delineated cooperatively for statistical purposes by the State of Alaska and the Census Bureau. In four states (Maryland, Missouri, Nevada, and Virginia), there are one or more incorporated places that are independent of any county organization and thus constitute primary divisions of their states. These incorporated places are known as independent cities and are treated as equivalent entities for purposes of data presentation. The District of Columbia and Guam have no primary divisions, and each area is considered an equivalent entity for purposes of data presentation. The Census Bureau treats the following entities as equivalents of counties for purposes of data presentation: Municipios in Puerto Rico, Districts and Islands in American Samoa, Municipalities in the Commonwealth of the Northern Mariana Islands, and Islands in the U.S. Virgin Islands. The entire area of the United States, Puerto Rico, and the Island Areas is covered by counties or equivalent entities. The boundaries for counties and equivalent entities are as of January 1, 2017, primarily as reported through the Census Bureau's Boundary and Annexation Survey (BAS).

  19. TIGER/Line Shapefile, Current, State, Texas, Census Tract

    • catalog.data.gov
    Updated Dec 15, 2023
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    U.S. Department of Commerce, U.S. Census Bureau, Geography Division, Geospatial Products Branch (Point of Contact) (2023). TIGER/Line Shapefile, Current, State, Texas, Census Tract [Dataset]. https://catalog.data.gov/dataset/tiger-line-shapefile-current-state-texas-census-tract
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    Dataset updated
    Dec 15, 2023
    Dataset provided by
    United States Census Bureauhttp://census.gov/
    Area covered
    Texas
    Description

    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. Census tracts are small, relatively permanent statistical subdivisions of a county or equivalent entity, and were defined by local participants as part of the 2020 Census Participant Statistical Areas Program. The Census Bureau delineated the census tracts in situations where no local participant existed or where all the potential participants declined to participate. The primary purpose of census tracts is to provide a stable set of geographic units for the presentation of census data and comparison back to previous decennial censuses. Census tracts generally have a population size between 1,200 and 8,000 people, with an optimum size of 4,000 people. When first delineated, census tracts were designed to be homogeneous with respect to population characteristics, economic status, and living conditions. The spatial size of census tracts varies widely depending on the density of settlement. Physical changes in street patterns caused by highway construction, new development, and so forth, may require boundary revisions. In addition, census tracts occasionally are split due to population growth, or combined as a result of substantial population decline. Census tract boundaries generally follow visible and identifiable features. They may follow legal boundaries such as minor civil division (MCD) or incorporated place boundaries in some States and situations to allow for census tract-to-governmental unit relationships where the governmental boundaries tend to remain unchanged between censuses. State and county boundaries always are census tract boundaries in the standard census geographic hierarchy. In a few rare instances, a census tract may consist of noncontiguous areas. These noncontiguous areas may occur where the census tracts are coextensive with all or parts of legal entities that are themselves noncontiguous. For the 2010 Census, the census tract code range of 9400 through 9499 was enforced for census tracts that include a majority American Indian population according to Census 2000 data and/or their area was primarily covered by federally recognized American Indian reservations and/or off-reservation trust lands; the code range 9800 through 9899 was enforced for those census tracts that contained little or no population and represented a relatively large special land use area such as a National Park, military installation, or a business/industrial park; and the code range 9900 through 9998 was enforced for those census tracts that contained only water area, no land area.

  20. w

    DIGITAL FLOOD INSURANCE RATE MAP DATABASE, LAVACA COUNTY, TEXAS (AND...

    • data.wu.ac.at
    arce +2
    Updated Nov 14, 2017
    + more versions
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    Federal Emergency Management Agency, Department of Homeland Security (2017). DIGITAL FLOOD INSURANCE RATE MAP DATABASE, LAVACA COUNTY, TEXAS (AND INCORPORATED AREAS) [Dataset]. https://data.wu.ac.at/schema/data_gov/MTU2NTRmMjMtYTcxMS00MzQzLWE3YzUtMTc0ZjhhNTZkNjE5
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    mapinfo interchange file (mif), shp, arceAvailable download formats
    Dataset updated
    Nov 14, 2017
    Dataset provided by
    Federal Emergency Management Agency, Department of Homeland Security
    License

    U.S. Government Workshttps://www.usa.gov/government-works
    License information was derived automatically

    Area covered
    07aa2609446b92bee76d56a9be7bf5e7a8250d1e
    Description

    The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA). The file is georeferenced to earth's surface using the projection and coordinate system. The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at a scale of 1:12000.

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Link copied
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Texas Department of Transportation (2016). Texas County Boundaries (line) [Dataset]. https://esri-san-antonio-office.hub.arcgis.com/datasets/TXDOT::texas-county-boundaries-line
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Texas County Boundaries (line)

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Dataset updated
Jul 19, 2016
Dataset authored and provided by
Texas Department of Transportationhttp://txdot.gov/
Area covered
Description

This dataset was created by the Transportation Planning and Programming (TPP) Division of the Texas Department of Transportation (TxDOT) for planning and asset inventory purposes, as well as for visualization and general mapping. County boundaries were digitized by TxDOT using USGS quad maps, and converted to line features using the Feature to Line tool. This dataset depicts a generalized coastline.Date valid as of: February 2015Publish Date: February 2015Update Frequency: StaticSecurity Level: Public

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