The famous person Byron J. Lambert is associated with one of more of the Johnson County historic places.
Some of the country's most noteable architects helped create the Johnson County places including Frank X. Freyder, B.A. Wickham, Bird & Rawson Proudfoot, Henry C. Seevogel, O.H. Carpenter, E.T. Davis, Howard Frances Moffitt and Sheets & Freyder. Prominent architectural styles found in Johnson Country are Queen Anne, Greek Revival and Italianate.