US Post Office-Dolgeville is a historic post office building located at Dolgeville in Herkimer County, New York, United States. It was built in 1939–1940, and is one of a number of post offices in New York State designed by the Office of the Supervising Architect of the Treasury Department, Louis A. Simon. It is a one-story, five bay building with a granite clad foundation, brick facades laid in common bond, and limestone trim in the Colonial Revival style. It features a slate-covered hipped roof on the front section. The interior features a 1940 fresco by artist James Michael Newell titled "Underground Railroad." It was listed on the National Register of Historic Places in 1988.