Top:Reference:Postal Information

• Brazilian Postal Codes - Complete catalog with a search form.
• Canadian Postal Service - information on postal rates, services, codes, post office locations and more.
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• Geographic NameServer - includes ZIPcode lookup.
• German Zip Codes
• National Address and ZIP+4 Browser - interactively browse all addresses in the United States.
• Official Postal Service Abbreviations
• Paris Postal Codes
• Pro-Zipcode! - Look-up city, state and county info with our database of 5-digit ZIP Codes.
• USPS City State / ZIP Code Associations - lookup ZIP Codes by city/state
• USPS Postal Rates
• USPS ZIP Code Lookup and Address Information - look up postal abbreviations, zip codes, and other information about the U.S. Postal Service.
• USPS ZIP+4 Lookup Form - lookup ZIP+4 Codes by mailing address
• ZIP+4 Codes for United States Vessels - aircraft carriers, submarines, battleships, etc.
• ZIPcode 4 Address Database - Enter partial address and get correct address with 9-digit zipcode
• ZipFind - calculate distance between two codes, all codes within a radius, and population figures within a zip code.