Free tool to validate U.S. mailing addresses against the USPS database. Check if an address exists, get ZIP+4 codes, and ensure proper formatting before mailing.

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.

Use our free address checker tool to help you verify postal addresses within the US or Canada. You can perform 10 address verifications a day.

Use the Address Check tool to instantly verify and correct US and Canadian addresses according to USPS and Canada Post standards.

Learn how to write a postal address for domestic, PO box, business & international mail with correct formats and examples.

Sep 4, 2025 · Ensuring your recipient addresses are well-formatted and accurate helps improve deliverability and avoid delays. Whether you're prepping just one address or an entire mailing list, …

It ensures that addresses, including street, city, state, and zip codes, are correct and current, significantly decreasing the chances of mail and packages being undeliverable.

Transform the way you handle data accuracy with our user-friendly address validation tool, designed to provide swift and precise verification, giving you confidence in the reliability of your information.

Learn how to write an address the proper way for letters, envelopes, and online forms. Follow step-by-step instructions and explore use case differences. You can use online tools like Adobe Acrobat to …

Generally, an address consists of four lines, each separated by a line break: the recipient's name, street address, secondary city name, and country. This structure applies to both personal and business …