The U.S. Post Office in Ballston Spa, New York, is located on Front Street in the village's commercial center. It is a brick building constructed in the mid-1930s, serving the 12020 ZIP Code, which covers the village and the surrounding areas of the Town of Ballston.Designed by Louis A. Simon, supervising architect of the Treasury Department, it uses an extremely restrained version of the Colonial Revival architectural style common on most post offices in small towns from that period. Only one other post office in New York is similar to it. In 1988 it was listed on the National Register of Historic Places.BuildingThe post office is located on the south side of Front Street at the corner of Milton Avenue, Ballston Spa's main street. It is raised slightly above street grade and set back slightly, with some shrubbery in the front. Two large maple trees are at the corners. Across both Front and Milton are two- and three-story commercial buildings. On its west is a driveway leading to the loading dock in back.It is a one-story, five-by-seven-bay steel frame structure on a raised foundation with a vertical brick watercourse. A wing with the loading dock extends to the west from the rear. The brick is laid in common bond rising to a flat roof and parapet with stone coping.