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Download URL (SHP): https://opendata.arcgis.com/api/v3/datasets/fc8ccbf1454841188b66bcef322096f3_0/downloads/data?format=shp&spatialRefId=4326
Download URL (GDB): https://www2.census.gov/geo/tiger/TGRGDB24/tlgdb_2024_a_us_substategeo.gdb.zip
Download URL (CSV): https://opendata.arcgis.com/datasets/fc8ccbf1454841188b66bcef322096f3_0.csv
Download URL (XLSX): https://opendata.arcgis.com/datasets/fc8ccbf1454841188b66bcef322096f3_0.xlsx

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Text Summary from About Page:
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US County Boundaries | HIFLD
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US County Boundaries
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US County Boundaries
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Summary
Counties (or statistically equivalent entities); January 1, 2024 vintage
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 census areas; the latter of which 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. All of the counties in Connecticut and Rhode Island and nine counties in Massachusetts were dissolved as functioning governmental entities; however, the Census Bureau continues to present data for these historical entities in order to provide comparable geographic units at the county level of the geographic hierarchy for these states and represents them as nonfunctioning legal entities in data products. 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.
Download:
https://www2.census.gov/geo/tiger/TGRGDB24/tlgdb_2024_a_us_substategeo.gdb.zip
Layer:
County
Metadata:
https://meta.geo.census.gov/data/existing/decennial/GEO/GPMB/TIGERline/Current_19115/series_tl_2023_county.shp.iso.xml
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April 8, 2025 at 3:54:42 PM EDT
Info Updated
April 8, 2025 at 7:54:42 PM EDT
Data Updated
June 5, 2024 at 5:02:28 PM EDT
Published Date
Records: 3,235
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Tags
Puerto Rico
Independent Cities
Continental United States
United States
Parish
Boundaries
Polygon
Governmental Units and Administrative and Statistical Boundaries Theme
Nation
Hawaii
American Samoa
Borough
Guam
National Geospatial Data Asset
CONUS
U.S. Virgin Islands
Municipio
County
Alaska
NGDA
Northern Mariana Islands
U.S.
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SDI
NSDI
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