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Find accurate and updated ZIP Code information for any address in the U.S. with USPS's online lookup tool.
Address Lookup – Lookup individual addresses to verify/obtain the correct 5-digit ZIP Code, ZIP + 4 code, carrier route code, county code, delivery point code, and check digit code. The Address Lookup function is free with the purchase of at least one of the four other AIS Viewer products, which are priced separately, allowing mailers the ...
Welcome to USPS.com. Track packages, pay and print postage with Click-N-Ship, schedule free package pickups, look up ZIP Codes, calculate postage prices, and find everything you need for sending mail and shipping packages.
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.
ZIP+4 Code Lookup We make it simple. Enter an address and receive the ZIP+4 code.
Look up a Zip code; Update or change your mailing address ; Request a pause or hold on your mail; Find out how to apply for or renew a passport
The Postal Service offers many ways to check the accuracy of your list. Vendors also offer USPS-approved products and services for address list maintenance. Your local Post Office or Business Mail Entry Unit can help you choose the best option for cleaning up your mailing list.
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.
Find answers to your questions about USPS address lookup services, including how to search for addresses and resolve issues.
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.