Old United States Post Office and Courts Building (Jefferson, Texas)

The Old U.S. Post Office and Courts Building in Jefferson, Texas is a Greek Revival architecture building that was listed on the National Register of Historic Places in 1969. It served historically as a courthouse of the United States District Court for the Eastern District of Texas, and as a post office; it is now the Jefferson Historical Museum.

Construction started in 1888 and was completed by 1890. The post office was on the first floor, the court was on the second. The building was purchased by the Jefferson Historical Society for use as a museum in 1965.