Yuma County Arizona (Historic Districts) has 5 places on the National Register of Historic Places including 2 places of National significance and 1 place of Statewide significance. Significant places include Brinley Avenue Historic District, Yuma Crossing and Associated Sites and Sears Point Archaeological District, Yuma Century Heights Conservancy Residential Historic District and Yuma Main Street Historic District.
Prehistoric cultural affiliation(s) include Desert Archaic, Patayan and Hohokam dating back to 10999 BC. Prominent architectural styles found in Yuma Country are Mission/Spanish Revival, Bungalow/Craftsman and Classical Revival.