Jefferson County
- Jefferson County, Arkansas
- Jefferson County, Colorado
- Jefferson County, Idaho
- Jefferson County, Illinois
- Jefferson County, Iowa
- Jefferson County, Kansas
- Jefferson County, Missouri
- Jefferson County, Montana
- Jefferson County, Nebraska
- Jefferson County, Ohio
- Jefferson County, Oklahoma
- Jefferson County, Oregon
- Jefferson County, Texas
- Jefferson County, Washington
- Jefferson County, Wisconsin
- Jefferson Parish, Louisiana
This is a disambiguation page.
