Prehistoric cultural affiliation(s) include Late Woodland dating back to 500.
Many famous people are associated with these St. Clair County historic places including Thomas Edison, Thomas . Edison, Capt. Samuel Ward, Col. George McDougall, James McColl and Wilbur F. Davidson.
Some of the country's most noteable architects helped create the St. Clair County places including Consolidated Shipbuilding Co., Alfred Beach, Joseph Hobson, Chicago Bridge and Iron Co., St. Clair County Road Commission, Michigan State Highway Department, St. Clair Co. Road Commision, Couse and Sanders, Marshall Campbell and Alfred B. Mullet. Prominent architectural styles found in St. Clair Country are Classical Revival, Queen Anne and Art Deco.