The USPS City/State Lookup Web Tool API allows developers to get the city and state corresponding to a given ZIP Code. This API can process up to five lookups per request.
This API is part of the USPS Web Tools API library which provides access to USPS data free of charge.
XAddress.io is a Address Validation Correction and Geocoding API. Use it to correct addresses, validate addresses, and get accurate latitude and longitude of a given location.
Address validation may...