Prehistoric cultural affiliation(s) include Late Prehistoric, Late Caddoan, Late Archaic and Fulton Aspect dating back to 2999 BC.
The famous person C.L. Cooper is associated with one of more of the McIntosh County historic places.
Some of the country's most noteable architects helped create the McIntosh County places including Foucart, Joseph & Hardin, M.T., A.D. Construction Co. Patterson, H.O. Valuer, Bryan W. Nolen, John Gaisford, Hicks & Forsyth Layton, Tankersley Construction Co., Missouri-Kansas-Texas Railway Co., C.F. Dozier and Bill Young. Prominent architectural styles found in McIntosh Country are Romanesque, Late Victorian and Bungalow/Craftsman.