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United States Postal Service
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United States Postal Service worker
A sealed envelope with a red wax stamp is overlaid with lit birthday candles shaped as the numbers 2, 5, and 0, in front of a faded background showing a mailbox and a postal worker in a mail truck.
Centennial map of the Pony Express route United States postage stamp showing a Pony Express rider on horseback, with a dashed route from Sacramento to St. Joseph and text reading 1860-1960 Pony Express and 4 cents. U.S. postal worker
What are zip codes?
Old Fremont Post Office Smokey Bear's ZIP Code United States Postal Service: mail sorting
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United States Postal Service: References & Edit History

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Article History

Type Description Contributor Date
Media added. Feb 11, 2026
Updated with financial challenges in the 2020s, added feature box, added Top Questions. Jul 25, 2025
Media added. May 30, 2024
Add new Web site: HistoryNet - The History of the US Postal Service � And That Time Someone Sent Their Kid Through the Mail. Apr 10, 2024
Corrected display issue. Mar 20, 2023
Links added. Feb 16, 2023
Add new Web site: Official Site of United States Postal Service. Jan 13, 2023
New article added. Jun 06, 2022
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