ZIP Code - Wikipedia
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 …
Knowledge: ZIP Code™ - The Basics - faq.usps.com
Need to look up a ZIP Code™? Try the ZIP Code™ lookup tool on USPS.com. Note: The ZIP Code™ lookup tool will display the address in USPS standardized format. This may look …
Free ZIP code map, zip code lookup, and zip code list
United States Zip Codes provides a free zip code map and list of zip codes by state. Find zip codes by address, zip codes by city, or zip codes by state.
When Did the ZIP Code System Officially Start? - LegalClarity
Aug 20, 2025 · These codes are fundamental to efficient mail processing and distribution. The acronym “ZIP” stands for “Zone Improvement Plan,” reflecting the system’s core purpose: to …
Understanding and mapping ZIP Codes - Geography Realm
Dec 11, 2020 · Ben Fry created an basic application called zipdecode that shows the location of all the ZIP codes in the United States. You can type in a ZIP code and the location and name …
Zip Code USPS: Unique Codes, Address Validation & How the System …
Every zip code is more than just a string of five digits. It’s an integral part of the national postal system, ensuring letters, packages, and marketing campaigns reach the intended recipient …
What is Zip Code and How Do Zip Codes Work? - PostGrid
Each ZIP Code corresponds to a specific geographic area, aiding in sorting and direct mail from the point of origin to the destination more accurately and swiftly. A ZIP code™ consists of …
ZIP Code | Postal Addressing, Delivery, Formatting | Britannica
Oct 21, 2025 · ZIP Code, system of zone coding (postal coding) introduced by the U.S. Post Office Department (now the U.S. Postal Service) in 1963 to facilitate the sorting and delivery of …
ZIP Code Meaning & History: Everything You Need to Know
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 …
Learn About ZIP Codes
View online, download PDFs, or use our interactive map to explore ZIP Code regions. Discover the importance of ZIP codes in our daily lives, from ensuring fast mail delivery to influencing …