The courthouse was designed by the Oklahoma City architectural firm Tonini & Bramblet, which also designed a number of other county courthouses in Oklahoma. The courthouse's design incorporates elements of Neoclassical style. Notable features include pillasters alternating with the window bays and rectangular and diamond-shaped plaques between the second and third-story windows.
The grounds of the courthouse contains a number of monuments and markers. These include the Cotton County Law Enforcement Memorial and a monument to veterans of World War II. A time capsule was buried on the grounds of the courthouse by the Chamber of Commerce, and is meant to be opened on August 4, 2101.