Jefferson County may refer to one of several 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, Jefferson Territory
• 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 term

This disambiguation page lists articles about distinct geographical locations with the same name.
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