Google mapping with Zip codes

Google mapping via zip codes is available from John Coryat Systems.

John Coryat Systems has release a zip code mapping tool that gets its data via the zipcode you enter into the system.

Zip code data is derived from the census “ZCTAs (ZIP Code Tabulation Areas)” which may be different than the USPS defined zip code delivery routes. A USPS zip code is not a geographical area but a route which may not be definable as a polygon.

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