United States Post Office and Courthouse–Aberdeen
The U.S. Post Office and Courthouse-Aberdeen, in Aberdeen, South Dakota, was built in 1936 with Art Deco features.  It is a steel-framed four-story rectangular building,  tall on a  by  base, with a one-story  by  extension (part of the original).

It was listed on the National Register of Historic Places in 2006.  It served historically as a government office building, as a post office, and as a courthouse.