Given a valid U.S. postal address, this server attempts to rewrite the address in the proper format along with the ZIP+4 code. If it is successful, you can retrieve a Postscript or a GIF file of the address for printing, with a barcode! You can also view a street map of the address, from 2 different Internet map sites (MapBlast and MapQuest). For example: You enter: The server responds: Ralph C ...

Links to a series of searchable databases for zip code cross references (zip code to city, census, county, area code, etc.), surrounding zip codes, distance between zip codes, city to zip codes, etc.

List of state abbreviations and postal codes.