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Census
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Cities and towns
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Contra Costa County (Calif.)
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1. Census Places, 1990 - San Francisco Bay Area, California
1990. California. Metropolitan Transportation Commission. This polygon shapefile contains the Census places for the state based as of January 1, 1990. Places, for the reporting of decennial census data, in... California. Metropolitan Transportation Commission.
2. Census Places, 1990 - San Francisco Bay Area, California (Clipped)
1990. California. Metropolitan Transportation Commission and U.S. Department of Commerce, Bureau of the Census, Geography Division. This polygon shapefile contains the Census places for the San Francisco Bay Area based as of January 1, 2000. These data have been clipped to the s... California. Metropolitan Transportation Commission.