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2000. California. Metropolitan Transportation Commission. This polygon shapefile represents ZIP Code Tabulation Areas (ZCTAs) for the entire state. ZCTAs are a new statistical entity developed by the U.S. ... California. Metropolitan Transportation Commission.
2015. County of San Mateo Information Services Department. This polygon shapefile depicts zip codes that correspond to different cities, as well as the San Francisco International Airport, within the County... County of San Mateo Information Services Department.