Prehistoric cultural affiliation(s) include Middle Mississippian, Late Woodland, Late Archaic, Upper Mississippian, Oneota, Ho-Chunk, Langford, Winnebago, Effigy Mound, Effigy Mound Culture, Middle Woodland and Multiple dating back to 1999 BC.
Many famous people are associated with these Jefferson County historic places including Margarethe Schurz, William D. Hoard, Milo Jones, Enoch J. Fargo, Edward J. Brandt, Caswell,L.B. and et al..
Some of the country's most noteable architects helped create the Jefferson County places including Louis W. Claude, Parker, C.W., Amusement Company, Edward E. Starck, Julius E. Heimerl, John J. Wollet, F. Lindsay, Ferry & Clas, Sumner Charles Frost, Alexander Kirkland and H.C. & Son Kohn. Prominent architectural styles found in Jefferson Country are Italianate, Queen Anne and Late Victorian.