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27 United States Postal Service Addresses

271 Format

Mail addressed to the United States Postal Service must contain a complete address.

Addresses may be located in the ZIP+4 file as street, firm, or Post Office Box records (record type S, F, or P, respectively). Most records carry the –9998 add-on code. However, many areas use different add-on codes.

Must use street address when sending mail to the United States Postal Service.