Power County Idaho has 14 places on the National Register of Historic Places including 1 place of National significance and 6 places of Statewide significance. Significant places include Oregon Trail Historic District, American Falls East Shore Power Plants, American Falls Reservoir Flooded Townsite, Oneida Milling and Elevator Company Grain Elevator and Oregon Trail Historic District (Boundary Increase).
Prehistoric cultural affiliation(s) include Archaic, Euro-American, Et Al and Shoshone dating back to 8999 BC.
Some of the country's most noteable architects helped create the Power County places including Flinton Construction Co., C.A. Sundberg, John Hayward and S. H. Anderson. Prominent architectural styles found in Power Country are Bungalow/Craftsman, Classical Revival and Late Gothic Revival.