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GIS Data: Data by ZIP Code

Find datasets for GIS mapping applications recommended by the library's subject specialist. It features current and historical data in the library’s collections and in public repositories.

... About ZIP Code data

ZIP Code data is available through American FactFinder, NHGIS and the CensusCD products. However, ZIP Code boundaries are proprietary to the U.S. Postal Service and do not necessarily follow census geography. The Census Bureau uses ZIP Code Tabulating Areas (ZCTA's) as their equivalent to ZIP Code boundaries. Postal boundaries do not follow the same nesting as census boundaries. That is another reason the Census Bureau uses ZCTA's.