USPS - Find a ZIP Code
A ZIP Code is an essential part of the mailing process. We provide your business with several different ways to find a ZIP Code and understand it.
Understanding U.S. ZIP Codes: What Each Digit Means in the ZIP Code
Jul 10, 2025 · But what exactly do the numbers in a ZIP Code mean? In this article, we’ll explain the meaning behind both the 5-digit ZIP Code and the 9-digit ZIP+4 Code, including what each …
ZIP Code - Wikipedia
ZIP Codes are numbered with the first digit representing a certain group of U.S. states, the second and third digits together representing a region in that group (or perhaps a large city), …
What Do the Numbers in a ZIP Code Mean? - LegalClarity
Aug 19, 2025 · What Do the Numbers in a ZIP Code Mean? Explore the systematic design of ZIP codes, revealing how their numerical structure organizes more than mail and influences daily life.
What ZIP Codes Mean: How to Decipher Postal Codes
Feb 12, 2024 · Learn the information that each digit in a ZIP Code corresponds to and how USPS uses postal codes to determine crucial address information. Have you ever wondered what all …
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 …
Free ZIP code map, zip code lookup, and zip code list
ZIP codes near me are shown on the map above. Some still refer to ZIP codes as US postal codes. The term ZIP stands for Zone Improvement Plan. The basic 5-digit format was first …
Complete Guide to ZIP Codes: Everything You Need to Know
Learn what ZIP codes are, how to find your ZIP code, and use Geocodio's lookup tools for accurate address data. What is a ZIP Code? ZIP codes are the handy postal code system …
What Is a ZIP Code? Definition, ZIP+4, Lookup, and USPS Basics
A standard five-digit ZIP code identifies the local delivery area, and ZIP+4 (ZIP 4) adds four digits that target precise locations like a city block, a specific building, or PO Boxes.
ZIP+4 Lookup Tool (USPS-Powered 9-Digit ZIP Code Finder)
Enter a full mailing address to get the correct 9-digit ZIP+4 code and USPS-standardized address format. Free tool powered by official USPS data.