Introduction of the ZIP Code - U.S. Postal Facts
The first number in the five-digit ZIP Code represents a general geographic area of the nation, “0” in the east, moving to “9” in the west. The next two numbers represent regional areas, and the final two …
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 the mail travels …
ZIP Code Meaning: What the Numbers Mean & How They Work
Jun 21, 2025 · ZIP codes are structured to provide a systematic way of identifying geographic locations for efficient mail delivery. The standard ZIP code consists of five digits, while an extended version, …
What is Zip Code and How Do Zip Codes Work? - PostGrid
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.
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 stands for Zone …
Free ZIP code map, zip code lookup, and zip code list
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 …
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 mail.
Understanding Zip Codes in the United States: A Comprehensive Guide
Jan 9, 2025 · Zip codes, or Zone Improvement Plans, are numerical codes assigned by the United States Postal Service (USPS) to facilitate the efficient delivery of mail. Introduced in 1963, these five …
What Is a ZIP Code? Definition, ZIP+4, Lookup, and USPS Basics
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 CODE Definition & Meaning - Merriam-Webster
The meaning of ZIP CODE is a number that identifies a particular postal delivery area in the U.S..