List of United States post offices
United States post offices operate under the authority of the United States Post Office Department or the United States Postal Service. In 2025, there are more than 40,000 post offices in the United States. 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 notable United States post offices. 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 or state and local historic registers.