USPS® Address Verification | Free Tools and Best Options - Smarty
https://www.smarty.com/articles/usps-address-verification
WEBVisit the USPS ZIP Code by Address lookup tool at: https://tools.usps.com/zip-code-lookup.htm?byaddress. Enter the street address, city, state, and ZIP Code in the designated fields. Not all fields are required, but complete address information increases the chances of successful validation by USPS. Click “Find”
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