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We've published an new version of the popular 2000 ZCTA zip code boundary (click here) map that allows the merging of multiple zip code areas into one large area. This map (2000 ZCTA Zip Code Union Demo) can take a list of zip codes, clicks on the map or keying in zip codes one at a time to construct this merged (union of polygons) boundary.
A page with a summary of the examples created as demos or discussion aids has been added at: Examples.htm. All examples are GPL, so use them as you see fit.
This page contains all entries posted to maps.huge.info in February 2007. They are listed from oldest to newest.
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