The courthouse, which was designed by Chicago architects Olmstead and Nicholson, was built in 1858 and has been used continuously since.

During the Civil War, the courthouse also served as a barracks for the county's troops prior to their commissioning.

The Lorado Taft Monument, a memorial to the county's Civil War veterans, was added to the site in 1891.

[3][4] The courthouse was added to the National Register of Historic Places on November 26, 1973.

This article about a property in Carroll County, Illinois on the National Register of Historic Places is a stub.