Post Office Locator
- Search function for locating the nearest post office to your home or business.
- http://www.switchboard.com/bin/cgidir.dll?Mem=1355&PR=138&CSF=LocatorPostOffice&CID=1222

The Postal Store
- Buy stamps, gifts, mailing products, and commemorative stamp items online.
- http://shop.usps.com/

ZIP Code Look-Up
- Automated zip code look-up and address information.
- http://zip4.usps.com/zip4/

United States Postal Inspection Service
- Federal law enforcement agents responsible for enforcing more than 200 federal statutes that deal with the United States Postal Service and the U.S. Mail. News, online mail fraud complaint form, and wanted posters.
- http://www.usps.com/postalinspectors/

Postage Rates and Fees
- Domestic and international rates and fees for residential and commercial customers. Includes link to rate calculators.
- http://www.usps.com/common/category/postage.htm

Track/Confirm -- Mail Tracking & Delivery Confirmation
- Allows for online tracking of Priority Mail and Parcel Post.
- http://www.usps.com/shipping/trackandconfirm.htm

Complete Mover's Guide from the USPS
- Includes a change of address form in downloadable format. Must be signed and delivered to local post office.
- https://moversguide.usps.com/

Lu's News & Views
- An electronic newsletter for postal employees.
- http://www.lunewsviews.com/

USPS Abbreviations Glossary
- Unofficial postal abbreviations, acronyms, terms, MODS numbers, and trademarks glossary by Douglas Boynton Quine.
- http://www.triskelion-ltd.com/uspsglos.html

Postal Workers Online
- A resource for postal employees. Contains postal news, benefits and employment information, postal links, and mutual transfer board.
- http://www.postalworkersonline.com/

Postal News Online
- Daily digest of online news about the US Postal Service.
- http://www.postalnews.com