The Jefferson County Sheriff's Department is the oldest law enforcement agency in Jefferson County, being established in 1805. The agency is totally committed to serving the needs of the residents and visitors of Jefferson County, making this area a great place to live and visit.

Jefferson County is located along the Canadian border in upstate New York - the heart of the Thousand Islands region. Summer brings thousands of people to the area for boating, fishing and other recreational reasons on the St. Lawrence River and Lake Ontario.