The Lincoln, Illinois Courthouse Square encompasses 10 square blocks, which is nearly half of the original town that was laid out in 1853.

Most of the buildings around the Historic District are commercial buildings that date from the late 19th century to the early 20th century. The large, two-and-a-half story, domed courthouse sits at the center of the square.

The entire Lincoln-Logan County Courthouse Square Historic District is on the National Register of Historic Places.