Oldham County Texas has 12 places on the National Register of Historic Places including 2 places of National significance and 9 places of Statewide significance. Significant places include Landergin Mesa, Rocky Dell, Chavez City Ruins (41OL253), Chavez Suburbs East and West (41OL254) and Green No. 5 (41OL257).
Prehistoric cultural affiliation(s) include Panhandle Culture and Pueblo dating back to 500. Prominent architectural styles found in Oldham Country are .