The U.S. Post Office in Haverstraw, New York, is located on Main Street in the center of the village. It serves the ZIP Code 10927, which covers the village.It was built in the mid-1930s as a New Deal project. Like many other post offices from that era, it is a brick building in the Colonial Revival architectural style. It features a high level of ornamentation, possibly due to the influence of James Farley, a native of the Haverstraw area who was Postmaster General at that time. In 1988 it was listed on the National Register of Historic Places.BuildingThe post office is located on the south side of Main between Front and South streets, across from the Haverstraw King's Daughters Public Library. To the east the land slopes gently down through a park to the Hudson River a short distance away. Houses are located to the west and south.Its square main block is a one-story, five-bay structure of brick in Flemish bond with an east wing and a slightly projecting pavilion on the north (front) elevation. The flat roof is topped with a cornice and parapet.