I need to find a zip code boundary shape-file for the 1990s but am having no luck searching around online. Census only serves up the new ZCTAs but I have a student who needs the actual zip code boundaries. I think he's found a vendor who sells this data but I know it must be online somewhere. Any help is appreciated, thanks!
Need 1990s zip code boundary GIS data
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Posted 20 July 2011 - 11:24 AM
GIS Reference and Instruction Specialist, Stanford Geospatial Center.
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