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, 67 feet (20 m) tall on a 150 feet (46 m) by 64 feet (20 m) base, with a one-story 100 feet (30 m) by 64 feet (20 m) extension (part of the original).

[2] 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.

This article about a property in South Dakota on the National Register of Historic Places is a stub.