ZIP Code™ Lookup | USPS 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
Free USPS Address Validator Standardizer (2025) 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
Validate a U. S. Postal Address - Free Web Tool by Firstlogic To verify an incomplete USPS address, enter your information in Firstlogic’s USPS address checker at the top of the page In many cases, the address standardization tool can validate an address after appending missing data such as city, or Zip Code, or street direction
Free Address Verification Tool – USPS, UPS, FedEx Validation Use our free address validation tool to quickly check any address against UPS, FedEx, and USPS No signup necessary Just enter your address into our fast lookup tool to quickly validate it