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1. 1:1,000,000-Scale County Boundaries of the United States, 2014

2014. Geological Survey (U.S.). This polygon shapefile contains the county boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands, by showing the counties as ar... Geological Survey (U.S.).

2. Administrative Counties of England and Wales, 1911

1911. Southall, Humphrey, Aucott, Paula, Bennett, Chris, and University of Portsmouth. These are digital boundaries for the system of counties essentially created by the 1889 Local Government Act and continuing to exist until 1974. Th... University of Portsmouth.

3. Administrative Counties of England and Wales, 1921

1921. Southall, Humphrey, Aucott, Paula, Bennett, Chris, and University of Portsmouth. These are digital boundaries for the system of counties essentially created by the 1889 Local Government Act and continuing to exist until 1974. Th... University of Portsmouth.

4. Administrative County Boundaries: United States and Territories, 2011

2011. United States. Bureau of the Census. Geography Division and United States. Bureau of Transportation Statistics. This polygon shapefile contains United States administrative county boundaries extracted from the U.S. Census Bureau's MAF/TIGER Database (MTDB). T... United States. Bureau of Transportation Statistics.

5. Coastal Counties, California, 2000

2000. California. Department of Fish and Game. Marine Resources Region. This polygon shapefile represents the 15 coastal counties in California. These counties were extracted from the Counties, California 2000 (county24... California. Department of Fish and Game. Marine Resources Region.

6. Counties, California, 2000

2000. California. Department of Fish and Game. Marine Resources Region. This polygon shapefile represents counties in California. These boundaries were created by digitized 24K quad base maps. This layer is part of a co... California. Department of Fish and Game. Marine Resources Region.

7. Counties, Northeast United States, 2007

2007. United States. National Oceanic and Atmospheric Administration, United States. National Ocean Service, and United States. Department of Commerce. This polygon shapefile represents county boundaries in the Northeastern United States. The TIGER/Line Shapefiles are an extract of selected geograp... United States. National Ocean Service.

8. Counties: San Francisco Bay Area and Santa Cruz County, California, 2010

2010. Bay Area Open Space Council, Conservation Lands Network, San Francisco Bay Area Upland Habitat Goals Project, and GreenInfo Network (Firm). This polygon file depicts boundaries of the nine counties in the San Francisco Bay Area Region, California. The Bay Area Open Space Council officia... Bay Area Open Space Council.

9. Counties: San Francisco Bay Area, California, 2010

2010. Bay Area Open Space Council, Conservation Lands Network, San Francisco Bay Area Upland Habitat Goals Project, and GreenInfo Network (Firm). This polygon shapefile depicts the nine counties of the San Francisco Bay Area Region in California. This data was derived from the United States C... Bay Area Open Space Council.

10. County Boundaries of the United States, 1980

1980. Geological Survey (U.S.). This polygon shapefile contains the 1980 state and county boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands. The map layer ... Geological Survey (U.S.).