United States post offices operate under the authority of the United States Post Office Department (1792–1971) or the United States Postal Service (since 1971). Historically, post offices were usually placed in a prominent location and many were architecturally distinctive, including notable buildings featuring Beaux-Arts, Art Deco, and Vernacular architecture. However, modern U.S. post offices were generally designed for functionality rather than architectural style.

Following is a list of United States post offices in Alaska. Notable post offices include individual buildings, whether still in service or not, which have architectural, historical, or community-related significance. Many of these are listed on the National Register of Historic Places (NRHP) or state and local historic registers.

Post officeLocationDate builtImageArchitectNotesU.S. Post Office, now Federal Building AnchorageAnchorage1939–1940Gilbert Stanley Underwood, Louis A. Simon, Neal A. MelickCooper Landing Post OfficeCooper Landing1921Jack LeanCordova Post Office and CourthouseCordova1924James A. WetmoreHoagland, Alison K. "U.S. Post Office and Courthouse [Cordova, Alaska". SAH Archipedia. Accessed February 18, 2026.Steele Creek RoadhouseEagleUnknownWoodchopper RoadhouseEagle1910UnknownMiller House Post OfficeFairbanks1900Old Federal Building (Fairbanks, Alaska)Fairbanks1933George N. RayUnited States Post Office (Homer, Alaska)Homer1927unknownAlison K. Hoagland, "Post Office [Homer, Alaska]". SAH Archipedia. Accessed February 18, 2026.Federal and Territorial Building, now Alaska State CapitolJuneau1929–1931James A. WetmoreAlison K. Hoagland, "Alaska State Capitol (Federal and Territorial Building) [Juneau, Alaska]", SAH Archipedia.Ketchikan Federal BuildingKetchikan1937–1938Garfield, Stanley-Brown, Harris and Robinson; Louis A. Simon; Neal A. MelickUnited States Post Office and CourthouseNome1938Louis A. SimonSitka United States Post Office and Court House, now Sitka City HallSitka1938Gilbert Stanley UnderwoodSoldotna Post OfficeSoldotna1949Sam Hoffman, Alfred AndersonUnited States Post Office and Customs House (Wrangell, Alaska)Wrangell1940–1942Hendrick P. MaasAlison K. Hoagland, "U.S. Post Office and Customs House, [Wrangell, Alaska]". SAH Archipedia.

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