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Postal Encyclopedia

AADC

Updated 2026-07-24

Automated Area Distribution Center

Sortation & Entry

A USPS processing facility sort level used for automation mail prepared to groups of ZIP Codes served by an area distribution center.

Definition reviewed 2026-07-24. Plavidian reference, written from the USPS Domestic Mail Manual. Final mail classification, postage, and preparation are confirmed after list processing and production review.

Related terms in Sortation & Entry

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