Enter a corporate or residential street address, city, and state to see a specific ZIP Code ™.

If you’re planning to settle into a new home for the holidays, make sure you change your address online using our official USPS Change of Address ® tool. You just need to provide a valid email address …

The Postal Service does not assign addresses or designate an address type as Residential...New construction street addresses are created by the local governments and reported to USPS

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.

To make sure that you are getting a list with accurate addresses, ask about the National Deliverability Index (NDI) of the list. The NDI rates the percentage of addresses in a list that are deliverable.

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.

Please verify the address before sending your mail. If more than one address matches the information provided, try narrowing your search by entering a street address and, if applicable, a unit number.

Learn how to verify your address with USPS quickly and accurately. Follow our step-by-step guide to ensure your mail reaches the right destination every time.

How to contact USPS for USPS Web Tools® and USPS API assistance. The USPS Web Tools API library gives ecommerce website shopping carts and shipping software access to USPS® data like …