The U.S. Post Office in Hudson, New York, United States, is located on Union Street at the corner of South Fourth Street, just across from the Columbia County courthouse. It serves the ZIP Code 12534, which covers the city of Hudson and surrounding areas of the Town of Greenport.It was built from 1909 to 1911 in a combination of the Colonial and Classical Revival architectural styles. The latter was used for the front portico, which echoes that of the slightly older county courthouse across the street. During the 1930s it was expanded in an architecturally sympathetic fashion, and public art was added to its lobby. It is a contributing property to the Hudson Historic District, established in 1985. Three years later, in 1988, the post office was listed on the National Register of Historic Places in its own right, the only one in the county on the Register.BuildingThe post office is a seven-by-five-bay one-story building of brick laid in Flemish bond on a raised foundation faced in granite. It is capped with a low hipped roof; the arched windows are trimmed in white marble with a block at the springline. A two-bay wing projects from the east, along the south facade.
