Courthouse Square Historic District is a national historic district located at West Plains, Howell County, Missouri. The district encompasses 46 contributing buildings in the central business district of West Plains. It developed between about 1881 and 1950 and includes representative examples of Italianate, Queen Anne, Romanesque Revival, Late Gothic Revival, and Art Deco style architecture. Located in the district are the separately listed Elledge Arcade Buildings, W. J. and Ed Smith Building, and West Plains Bank Building. Other notable buildings include the IOOF Building #2 (c. 1923), First Presbyterian Church (c. 1887, 1910, 1978), Howell County Courthouse (1937), Aid Hardware Building (1914-1915), W. N. Evans Building (c. 1892), J. R. Foster Building (c. 1929), Foster-Renfrew Buildin