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City State Product

City State Product is a comprehensive list of ZIP Codes with corresponding city and county names. This file also contains other names by which a Post Office may be known. City State Product can assist mailers with city, state, and 5-digit ZIP validation; ZIP Code™ and finance number assignment; and county code/name identification.

This product is available on cartridge, and CD-ROM and contains approximately 100,000 records. Updates are issued monthly or bimonthly, and technical guides are either shipped automatically with a subscription or are available upon request.

Note: City State Product does not contain detailed street data; it only contains city place names and their associated ZIP Codes. To perform complete 5-digit ZIP coding of address files, City State Product must be used in conjunction with Five-Digit ZIP Product[1], ZIP + 4® Product[2], or Carrier Route Product[3].

A sample City State file is available for download.

Links
Table of Links
  1. http://www.usps.com/ncsc/addressinfo/fivedigitzip.htm
  2. http://www.usps.com/ncsc/addressinfo/zip4.htm
  3. http://www.usps.com/ncsc/addressinfo/carrierroute.htm
  4. http://ribbs.usps.gov/files/addressing/SAMPLES/CityState-sam.txt