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Standardized Delivery Address Line and Last Line

The Delivery Address Line and the Last Line of addresses output to the mailpiece should be complete, standardized, and validated with the ZIP+4 file and City State file, respectively.

It is recommended that delivery address information be stored in a minimum of 30 bytes or spaces in your computer system. The optimum recommendation is 64 bytes or spaces to be compatible with the Postal Service National ZIP+4 database.

The Postal Service defines a complete address as one that has all the address elements necessary to allow an exact match with the current Postal Service ZIP+4 and City State files to obtain the finest level of ZIP+4 and delivery point codes for the delivery address. A complete address may be required on mail at some automation rates. See the DMM for more detailed information.

A standardized address is one that is fully spelled out, abbreviated by using the Postal Service standard abbreviations (shown in this publication) or as shown in the current Postal Service ZIP+4 file.

delivery_address_standard