General Information
- Established: 1805
- Population: 111,738 (2000 census)
- County Seat: Watertown
- Tourism Region: Thousand Islands-Seaway
- Information: The official
page of Jefferson County
- Bordering Counties: Lewis, Oswego, St.
Lawrence,
Leeds and Grenville Ontario
- Area code: 315
- Origin of Name: Named after Thomas Jefferson.
- Incorporated Cities: Watertown
- Villages: Adams, Alexandria Bay, Antwerp, Black River, Brownville,
Cape Vincent, Carthage, Clayton, Chaumont, Deferiet, Dexter,
Ellisburg, Evans Mills, Glen Park, Herrings, Mannsville, Philadelphia,
Sackets Harbor, Theresa, West Carthage
- Towns: Adams, Alexandria, Antwerp, Brownville, Cape Vincent,
Champion, Clayton, Ellisburg, Henderson, Hounsfield, LeRay, Lorraine,
Lyme, Orleans, Pamelia, Philadelphia, Rodman, Rutland, Theresa,
Watertown, Wilna, Worth
Attractions
Road Information
