United States Department of Agriculture, National Agricultural Statistics Service, Research and Development Division, Geospatial Information Branch, Spatial Analysis Research Se, 2009, 2007 Census of Agriculture County-Level Boundaries, (CoUS_GCS07.shp -.shx, -.dbf, -.sbn, -.sbx, -.prj, CoAK_GCS07.shp -.shx, -.dbf, -.sbn, -.sbx, -.prj, CoHI_GCS07.shp -.shx, -.dbf, -.sbn, -.sbx, -.prj, CoPR_GCS07.shp -.shx, -.dbf, -.sbn, -.sbx, -.prj): U.S. Department of Agriculture, National Agricultural Statistics Service, Fairfax, Virginia.Online Links:
Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest .000001. Longitudes are given to the nearest .000001. Latitude and longitude values are specified in Decimal Degrees.
The horizontal datum used is North American Datum of 1983.
The ellipsoid used is Geodetic Reference System 80.
The semi-major axis of the ellipsoid used is 6378137.0.
The flattening of the ellipsoid used is 1/298.257222.
Sequential unique whole numbers automatically generated.
Coordinates defining the features.
| Formal codeset | |
|---|---|
| Codeset Name: | U.S. Department of Commerce, 1990, Counties and Equivalent Entities of The United States, Its Possessions, and Associated Areas (Federal Information Processing Standard 6-4): Washington, D.C. National Institute of Standards and Technology. |
| Codeset Source: | U.S. Bureau of the Census |
| Formal codeset | |
|---|---|
| Codeset Name: | U.S. Department of Commerce, 1990, Counties and Equivalent Entities of The United States, Its Possessions, and Associated Areas (Federal Information Processing Standard 6-4): Washington, D.C. National Institute of Standards and Technology. |
| Codeset Source: | U.S. Bureau of the Census |
| Formal codeset | |
|---|---|
| Codeset Name: | U.S. Department of Commerce, 1990, Counties and Equivalent Entities of The United States, Its Possessions, and Associated Areas (Federal Information Processing Standard 6-4): Washington, D.C. National Institute of Standards and Technology. |
| Codeset Source: | U.S. Bureau of the Census |
| Range of values | |
|---|---|
| Minimum: | 4.84564 (actual value, not min. range value) |
| Maximum: | 266451.24866 (actual value, not max. range value) |
| Units: | Square mile |
| Range of values | |
|---|---|
| Minimum: | 3101.21152 (actual value, not min. range value) |
| Maximum: | 170528799.14048 (actual value, not max. range value) |
| Units: | Acre |
| Value | Definition |
|---|---|
| County, Parish, Municipio, Agricultural Census Area | Type of county-level entity. |
| Formal codeset | |
|---|---|
| Codeset Name: | U.S. Department of Commerce, 1990, Counties and Equivalent Entities of The United States, Its Possessions, and Associated Areas (Federal Information Processing Standard 6-4): Washington, D.C. National Institute of Standards and Technology. |
| Codeset Source: | U.S. Bureau of the Census |
| Formal codeset | |
|---|---|
| Codeset Name: | U.S. Department of Commerce, 1990, Counties and Equivalent Entities of The United States, Its Possessions, and Associated Areas (Federal Information Processing Standard 6-4): Washington, D.C. National Institute of Standards and Technology. |
| Codeset Source: | U.S. Bureau of the Census |
Research and Development Division staff
703-877-8000 (voice)
703-877-8044 (FAX)
HQ_RD_OD@nass.usda.gov
The boundaries are intended for geographic display and analysis at the county- level. The boundary data are designed for small scale thematic mapping applications at a scale of 1:20,000,000 or smaller (e.g., 1:50,000,000, etc.). The county-level boundaries are provided "as is". The USDA/NASS does not warrant the results you may obtain using the Agricultural Census county-level boundary data.
USDA, National Agricultural Statistics Service, 2003, Finalized 2002 file of Agricultural Census county-level boundaries: USDA, National Agricultural Statistics Service, Washington, DC.
U.S. Bureau of the Census, Geography Division, 2008, 2007 Projected_Counties.shp, -.shx, -.dbf (Generalized digital vector files): U.S. Bureau of the Census, Geography Division, Suitland, MD.
USDA, National Agricultural Statistics Service, 2008, Extracted Broomfield County Colorado boundary file: USDA, National Agricultural Statistics Service, Washington, DC.
USDA, National Agricultural Statistics Service, 2008, 2002 Agricultural Census county-level boundaries updated with Broomfield County, CO: USDA, National Agricultural Statistics Service, Washington, DC.
U.S. Bureau of the Census, Geography Division, 2008, counties_area_perim.xls (2007 U.S. county land area, perimeter data): U.S. Bureau of the Census, Geography Division, Suitland, MD.
USDA, National Agricultural Statistics Service, 2008, U.S. county FIPS codes conversion to Agricultural Census county codes: USDA, National Agricultural Statistics Service, Washington, DC.
USDA, National Agricultural Statistics Service, 2008, Recalculated 2007 Agricultural Census county-level land area values: USDA, National Agricultural Statistics Service, Washington, DC.
USDA, National Agricultural Statistics Service, 2008, 2007 Agricultural Census county-level boundary files with updated 2007 land areas: USDA, National Agricultural Statistics Service, Washington, DC.
USDA, National Agricultural Statistics Service, 2008, 2007 Agricultural Census county-level boundary files with Miami-Dade FIPS Code 12086: USDA, National Agricultural Statistics Service, Washington, DC.
USDA, National Agricultural Statistics Service, 2008, Final unprojected 2007 Agricultural Census county-level boundary files: USDA, National Agricultural Statistics Service, Washington, DC.
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Unmodified entities have entity codes and names which conform to the Federal Information Processing Standard 6-4. Area values in square miles are derived from land polygon area values from the U.S. Census Bureau's TIGER database.
The county-level boundary data are highly generalized and suitable for use in small scale (1:20,000,000) thematic mapping applications. No accuracy tests were performed.
The generalized data do NOT include 1) boundaries for the Aleutian Islands in the Eastern Hemisphere, 2) boundaries for Hawaiian Islands west of -160.25 degrees longitude, 3) very small polygons because of coordinate thinning, and 4) water polygons. This data set provides the land area in square miles and number of acres for each county equivalent (or agricultural census area in Alaska). The land area values are based on the area of land polygons from the U.S. Census Bureau's TIGER database. If a county is composed of several polygons, the area value assigned to each polygon is the land area value of the entire county (for the purpose of choropleth mapping). Some of the county-level boundaries were modified to show geographic areas for which Agricultural Census statistics are reported. County Federal Information Processing (FIPS) codes for the modified counties were replaced by Agricultural Census county codes. States with modifications to their county boundaries and county codes are - Alaska, Hawaii, Maryland, Missouri, Virginia (and the District of Columbia).
No topological checks were performed on the data.
Are there legal restrictions on access or use of the data?
- Access_Constraints: None
- Use_Constraints:
- None. Acknowledgment of the U.S. Department of Agriculture, National Agricultural Statistics Service would be appreciated in products derived from these data files.
1-800-727-9540 (voice)
202-690-2090 (FAX)
nass@nass.usda.gov
United States: 2007 Census of Agriculture downloadable county-level boundary files.
Users of the Agricultural Census county-level boundary data are solely responsible for interpretations made from the product. The boundary data are provided "as is". USDA/NASS does not warrant results you may obtain by using the boundary data. Feel free to contact our staff at (HQ_RD_OD@nass.usda.gov) if technical questions arise in the use of the county-level boundary data.
| Data format: | ESRI Shapefile (.shp, .shx., .dbf, .sbn, .sbx, .prj) Size: .55 |
|---|---|
| Network links: |
<http://www.agcensus.usda.gov/Publications/2007/Online_Highlights/Ag_Atlas_Maps/mapfiles/CoGenAll_GCS07.zip> |
703-877-8000 (voice)
703-877-8044 (FAX)
HQ_RD_OD@nass.usda.gov