Prehistoric cultural affiliation(s) include Coles Creek Period and Anna Phase Of Plaquemine dating back to 500.
The famous person Major General Napoleon J. T. Dana is associated with one of more of the Jefferson County historic places.
Some of the country's most noteable architects helped create the Jefferson County places including J. Edward Smith and Nathaniel Loomis Carpenter. Prominent architectural styles found in Jefferson Country are Federal, Greek Revival and Gothic Revival.