1990. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays the counties of Arizona, based on a ground condition of January 1, 1990. The primary legal divisions of most states are ter...
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1990. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays the counties for the state, based on a ground condition of January 1, 1990. The primary legal divisions of most states are ...
1990. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays the counties for the state of Delaware, based on a ground condition of January 1, 1990. The primary legal divisions of most... U.S. Department of Commerce, Bureau of the Census, Geography Division.
2000. California. Metropolitan Transportation Commission and U.S. Department of Commerce, Bureau of the Census, Geography Division. This polygon shapefile displays the 9 counties for the San Francisco Bay Area of California, as of January 1, 2000. The primary legal divisions of ... California. Metropolitan Transportation Commission.
2000. California. Metropolitan Transportation Commission and U.S. Department of Commerce, Bureau of the Census, Geography Division. This polygon shapefile displays the boundaries for the 9 counties of the San Francisco Bay Area in California as of January 1, 2000. These data hav... California. Metropolitan Transportation Commission.
1990. U.S. Census Bureau. CUGIR, the Cornell University Geospatial Information Repository, using US Department of Commerce, Bureau of the Census data, developed the GIS data...
1990. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays Census County Divisions and Minor Civil Divisions based on the 1990 Census. Census county divisions (CCDs) are county subdi...
1990. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays the Census County Divisions and Minor Civil Divisions of Alabama based on the 1990 Census. Census county divisions (CCDs) a...
1990. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays the Census County Divisions and Minor Civil Divisions of Alaska. In Alaska, which has no counties, the statistically equiva...
1990. U.S. Department of Commerce, Bureau of the Census, Geography Division. This datalayer displays the Census County Divisions and Minor Civil Divisions of Arizona based on the 1990 Census. Census county divisions (CCDs) a...