| Publication 28 - Postal Addressing Standards > Appendix I > I1 General 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. | |