The Milam County Courthouse and Jail are two separate historic county governmental buildings located diagonally opposite each other in Cameron, Milam County, Texas. The Milam County Courthouse, located at 100 South Fannin Avenue, was built in 1890-1892, while the Milam County Jail, now known as the Milam County Museum, was built in 1895. On December 20, 1977, they were added to the National Register of Historic Places as a single entry.