Online resources for postal code information. We are continually working to add new sites to the directory so it will keep growing and become the compelling tool for all surfers and searchers. We welcome postal codes sites with complete structure, unique content and beautiful graphics to join the directory.
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Postal Information Suppliers:
- Search for US area codes, zip codes, and cities. Zip multiple cities are handled. Over 80,000 entries. Crossreferences to states and counties.
- Tools to calculate domestic and international postage rates. Powered by USPS.
- Guide to mail information features rates, post codes, and postal authorities around the world. Also find philately resources and links to general reference materials.