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Learn about Post Office and get information on topics related to Post Office.

Featured Article: Franking and penalty privileges

Franking and penalty privileges are ways of sending official matter through the United States mails without prepayment of postage. See more »

Airmail

Airmail is mail sent by aircraft.

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Franking and penalty privileges

Franking and penalty privileges are ways of sending official matter through the United States mails without prepayment of postage.

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Hill, Sir Rowland

Hill, Sir Rowland (1795-1879), was a British schoolteacher best known as the originator of the Penny Post.

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Parcel post

Parcel post is a postal service for carrying packages.

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Postal services

Postal services, also called mail services, are the procedures involved in the collection, handling, and delivery of letters, messages, and packages.

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Rural delivery

Rural delivery is a service that provides mail delivery to rural and suburban communities throughout the United States.

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ZIP Code

ZIP Code is a code system used to speed the sorting and delivery of mail in the United States.

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