Prehistoric cultural affiliation(s) include Paleoindian and Late Archaic dating back to 499 BC.
Some of the country's most noteable architects helped create the Keith County places including John and Alan McDonald, Frank Mechau, Nebraska Bureau of Roads & Bridges, Ed Casey, McClintic-Marshall Corp. and Dr. Burdette L. Gainsforth. Prominent architectural styles found in Keith Country are Early Commercial, Late Victorian and Moderne.