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 ...

This is not the first proposed ZIP code upgrade. In December 2024, Boebert’s previous version of the ZIP code bill passed unanimously in the House. However, the bill lost momentum, and the Senate ...

Everyone knows the ZIP code 90210—but what about these other notable codes around the country? The Zone Improvement Plan, otherwise known as the ZIP code, is the network of postal codes the U.S.