Flats Addressing Requirements

Effective March 29, 2009, new address placement and formatting requirements adopted by the Postal Service^® for Periodicals, Standard Mail^®, Bound Printed Matter, Media Mail^®, and Library Mail flat-size pieces sent at automation, presorted, or carrier route prices, will be implemented. USPS^® also adopts related revisions for automation and presorted First-Class Mail^® flats. New requirements published in the Federal Register May 7, 2008.

New Address Requirements for Automation, Presorted, and Carrier Route Flat-Size Mail