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Look Up a ZIP Code. ™. Enter a corporate or residential street address, city, and state to see a specific ZIP Code ™. Enter city and state to see all the ZIP Codes ™ for that city. Enter a ZIP Code ™ to see the cities it covers.
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Find a ZIP Code for any address in the U.S. with USPS. Search by street, city, state, or company name and get accurate and updated results.
Find the ZIP Code for an area of a city or town, or the location of a given ZIP Code. ZIP+4 Code Lookup. We make it simple. Enter an address and receive the ZIP+4 code.
Use the free ZIP Code Lookup and the ZIP+4 code lookup on the Postal Explorer website (left frame) to find the correct ZIP Codes and ZIP+4 codes for your addresses. Almost 25% of all mailpieces have something wrong with the address -- for instance, a missing apartment number or a wrong ZIP Code.
Enter a 5-Digit ZIP Code. Use the Carrier Route Map lookup to search a ZIP Code and see the USPS carrier route maps with boundaries displayed along with additional information such as number of deliverable addresses, types of routes and more. View a list of carrier routes within a given ZIP Code.
Click here to Look up ZIP Codes™ for corporate and residential addresses. ZIP Code by Address. Enter street address, city, and state to see a specific ZIP Code. Note: A ZIP Code result does not confirm that a person or company is at that address.
