US Post Office-Freeport is a historic post office building located at Freeport in the town of Hempstead, Nassau County, New York, United States. It was built in 1932 and designed by consulting architects Tachau and Vought for the Office of the Supervising Architect. It is a two-story, symmetrically massed brick building trimmed in limestone in the Colonial Revival style. It features a three bay wide entrance pavilion with a gable roof. The lobby features two murals by William Gropper installed in 1938 and titled "Air Mail" and "Suburban Post in Winter."