Imperial County California (Historic Districts) has 3 places on the National Register of Historic Places including 2 places of National significance. Significant places include Southwest Lake Cahuilla Recessional Shoreline Archeological District and Yuma Crossing and Associated Sites, Fages-De Anza Trail-Southern Emigrant Road.
Prehistoric cultural affiliation(s) include Yuman, Shoshonan, Cahuilla and Kumeyaay dating back to 7999 BC. Prominent architectural styles found in Imperial Country are .