spec checked
USPS Publication 28: Postal Addressing Standards
Documents U.S. postal address standards, delivery address line structure, street suffixes, secondary unit designators, compression guidance, and ZIP-oriented mailing address conventions.
Pattern Decisions This Source Supports
| Pattern | Supported decision | Required contract | Claim note |
|---|---|---|---|
| Address entry | Choose address entry when the product needs a complete postal, delivery, billing, contact, or official address rather than one short freeform value. | Users can start with lookup or choose manual entry before providing a postal code. | USPS Publication 28 supports delivery address structure, secondary unit designators, street suffix conventions, and U.S. postal standards. |
Evidence Role
This source is treated as spec evidence. Use it to validate the decision rules above, not as a visual style reference.
Publisher: United States Postal Service. Last checked: .