Prehistoric cultural affiliation(s) include Paleo-Indian, Late Archaic, Desert Archaic and Sevier-Fremont dating back to 12999 BC.
Some of the country's most noteable architects helped create the Millard County places including Daley Brothers, Daly Bros.; War Location Authority, US Army Corps of Engineers, Ira N. Hinckley, Truman O. Angell, Scott & Welch, Talboe & Litchfield, CCC, USFS and John W. Radford. Prominent architectural styles found in Millard Country are Late Victorian, Art Deco and Gothic Revival.