Prehistoric cultural affiliation(s) include Native American (Archaic) and European American dating back to 2499 BC.
The famous person Lowell Sr. Smith 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 John Wesley Smith. Prominent architectural styles found in Johnson Country are Late 19th And 20th Century American Movements, Late 19th And 20th Century Revivals and Other.