Internet Resources - Postal Information

United States Postal Service City State/ZIP Code Associations
Enter a city and state to find any associated ZIP Codes or enter a ZIP Code to find any associated cities.

Other Postal Information

AAA Matilda International Zipcodes and Postcodes
Canada Post Corporation Home Page
Find Canadian postal codes, parcel rates, and other information
Frank' Compulsive Guide to Postal Addresses
InterShipper - The Internet Shipping Center
InterShipper is the only place on the net where you can track packages, compare rates, and call for a pickup or locate a drop-off point for multiple carriers.
The National Address Server
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).
Postage rates
Postal Abbreviations for States
Postcodes On-Line At Postcodes On-Line you can find any Postcode or address within the UK from our database of 27 million addresses.
USPS Official Abbreviations
Yahoo! - Reference: Postal Information
ZipFind - Find the distance between any two Zip Codes