The courthouse is a three-story building in the Renaissance Revival style.
The building is made of Berea Sandstone that was quarried near Cleveland, Ohio.
The front facade faces south and is divided into thirteen bays.
The entrance is flanked by two 20-foot-tall (6.1 m) Corinthian columns made of Ortonville granite.
The original second-floor entrance is encircled by a two-story-tall arch of stained glass.
The building is topped by a dome with four clocks facing each of north, south, east and west.
On top of the dome is a copper statue of Justice.

The courthouse originally stood alone on the block; later on an addition was built at the southwest corner for more offices and a jail was built at the southeast corner.
The courthouse is a three-story building in the Renaissance Revival style. The building is made of Berea Sandstone that was quarried near Cleveland, Ohio. The front facade faces south and is divided into thirteen bays. The entrance is flanked by two 20-foot-tall (6.1 m) Corinthian columns made of Ortonville granite. The original second-floor entrance is encircled by a two-story-tall arch of stained glass. The building is topped by a dome with four clocks facing each of north, south, east and west. On top of the dome is a copper statue of Justice.
The courthouse originally stood alone on the block; later on an addition was built at the southwest corner for more offices and a jail was built at the southeast corner.
Brown County Courthouse (South Dakota)