Need a zip code? Then pick up the phone. To find the zip code for any address in the United States or U.S. territory, call the U.S. Postal Service in Miami at 305-470-0327. You can also call 0328 or ...

Mr. Zip, a gangly cartoonish figure with wide friendly eyes and a neat blue mail carrier's uniform, emerged fifty years ago to help the U.S. Postal Service promote its newest idea: five numbers added ...

Today on All Things Considered, NPR's Andrea Seabrook reported that the U.S. Postal Service plans to launch next month a national "Portable ZIP Codes" program. Under the program, Americans would be ...

Today marks the 50th anniversary of the Zone Improvement Plan, the network of ZIP codes we use for everything from mail delivery to credit card security. The U.S. Postal Service began using the ...