Kay County Oklahoma (Vacant / Not In Use) has 2 places on the National Register of Historic Places including 1 place of National significance and 2 places of Statewide significance. Significant places include Chilocco Indian Agricultural School, Chilocco Indian Agricultural School and Kaw Indian Agency.
Some of the country's most noteable architects helped create the Kay County places including Edmund Bidwell and Hoyland & Smith Pauley. Prominent architectural styles found in Kay Country are Colonial Revival and Romanesque.