Use our address lookup or code list to find the correct 5-digit or 9-digit (ZIP+4) code for your postal mails destination.

Enter a corporate or residential street address, city, and state to see a specific ZIP Code ™. Find by Address By City and State

US ZIP codes are a type of postal code used within the United States to help the United States Postal Service (USPS) route mail more efficiently. ZIP codes near me are shown on the map above. Some …

Jan 15, 2026 · The ZIP Codes in Saint Louis range from 63101 to 63199. Of the ZIP codes within or partially within Saint Louis there are 47 Standard ZIP Codes, 8 Unique ZIP Codes and 12 PO Box …

Use our interactive map, address lookup, or code list to find the correct 5-digit or 9-digit (ZIP+4) code for your postal mails destination.

The ZIP Code system (an acronym for Zone Improvement Plan[1]) is the system of postal codes used by the United States Postal Service (USPS). The term ZIP was chosen to suggest that the mail travels …

At its core, a ZIP code is a U.S. postal code that lets the United States Postal Service group addresses into logical clusters so machines and people can sort mail and deliver mail reliably. A standard five …

ZIP codes are the handy postal code system used by the United States Postal Service (USPS) to sort and deliver mail efficiently. The name "ZIP" actually stands for "Zone Improvement Plan," which was …

What is ZIP Code and what makes the Postal Code system so special? ZIP Codes are the postal code system used in the US. Read more.

Jun 11, 2025 · What is a ZIP Code? A ZIP Code is a smart system that keeps America’s mail moving efficiently. It was created by the United States Postal Service (USPS) in 1963. ZIP stands for Zone …