For a nominal amount, the U.S. Postal Service provides CDs that contain all US postal codes, including the cities and states along with the zip codes themselves.

This object works in conjunction with a database (SQL, Paradox, DBF or Advantage) to find city, county, state and zip codes in various ways.

The object can be used to validate an address entry's declared city and state, as well as populate other data elements and fields based on a peripheral query.

The management of the object's use is through several forms that work in conjunction with the target database. There is also a utility to take the USPO feed and populate the database. The database's DDL is included in this object.