Zip Code Info Links

Free Services

• National Address Server
  A free byproduct of research, this returns zip code and other data for a street address.
• Zipdy
  This is a freeware program that returns distances between any two zip codes.
• National Atlas of the U.S.A.
  This is a
• Microsoft Terraserver
  A free source for USGS maps and aerial photographs.
• NPA Information: Area Code
  This has a database of area code information.
• zipdecode
  A Java applet which graphically shows the location of zip codes and zip code prefixes.
• FreeGeo
  This extracts geographic information online by using Google Maps.

Also see individual area codes in the .us domain, like http://94062.us/ or http://41018.us/.

Commercial Packages

• ZipInfo.com
• Eraserver.net
  A Microsoft .NET project of some sort?
• GetZips Zip Code Database
  Gives zip codes and names for area code, etc.
• GeoLytics
  A commercial CensusCD.

General Zip Code Information

• U.S. Postal Service ZIP Code FAQ
• U.S. Census Bureau Geography Web Page