Jefferson County Jefferson County Local Weather Road Conditions Jefferson County, covering 1652 square miles populated by 10,400 people, is located along the Continental Divide in southwestern Montana. With communities on both sides of the Divide, many nestled in the mountains, the county boasts breathtaking views and abundant recreational opportunities. Smaller communities include Basin, Jefferson City, Cardwell, and Elk Park.
Boulder is an incorporated town with both a public high school and elementary school.
Boulder Elementary serves a student population of roughly equal number, with classes for kindergarten through eighth grade taught by well-experienced teachers. Northern Jefferson County, where Clancy and Montana City each have an elementary school, is the fastest growing portion of the county. Residents take advantage of the easy access to the state capital to live in a rural setting and work as employees of the state or federal government, consultants, business owners and more. Businesses located in northern Jefferson County offer fine dining, comfortable accommodations, and many professional services. Medical, recreational, construction, and other small businesses are joined by a major gold mine in employing area residents.