Jefferson County may refer to one of 26 extant counties or parishes in the United States, all of which are named directly or indirectly after Thomas Jefferson:
- Jefferson County, Alabama
- Jefferson County, Arkansas
- Jefferson County, Colorado
- Jefferson County, Florida
- Jefferson County, Georgia
- Jefferson County, Idaho
- Jefferson County, Illinois
- Jefferson County, Indiana
- Jefferson County, Iowa
- Jefferson County, Kansas
- Jefferson County, Kentucky
- Jefferson Parish, Louisiana
- Jefferson County, Mississippi
- Jefferson County, Missouri
- Jefferson County, Montana
- Jefferson County, Nebraska
- Jefferson County, New York
- Jefferson County, Ohio
- Jefferson County, Oklahoma
- Jefferson County, Oregon
- Jefferson County, Pennsylvania
- Jefferson County, Tennessee
- Jefferson County, Texas
- Jefferson County, Virginia, has existed twice; the two counties continue in existence as Jefferson County, Kentucky and Jefferson County, West Virginia
- Jefferson County, Washington
- Jefferson County, West Virginia
- Jefferson County, Wisconsin
See also
- Jefferson County (The Waltons), a fictional county in Virginia
- Jefferson Davis Parish, Louisiana
- Jefferson Davis County, Mississippi
- Jeff Davis County (disambiguation)
Topics referred to by the same termThis disambiguation page lists articles about distinct geographical locations with the same name.If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: