The district largely includes commercial buildings that surround the 1911 Keokuk County Courthouse, which is separately listed on the National Register.[3] For the most part the buildings are one or two-story brick structures. Two of the building are three stories. Initially, the buildings built around the square were all wood-frame construction. After the Civil War brick buildings began to replace them, with 1876 being a prominent year for new construction. The change from wood to brick structures continued into the 20th century. There are also two other civic buildings in the district, Memorial Hall (1923; Sigourney City Hall and auditorium), and the post office (1938). Both of these buildings are located just off of the square proper. The contributing structure is a bandstand, and contributing objects are a fountain, and a Civil War Monument. All three are located on the courthouse grounds.
