Cities and Towns in Jefferson County, Montana

Founded in February 2, 1865, Jefferson County is one of 56 counties in the state of Montana. Historically, Jefferson County was one of the 9 original counties. The city of Boulder is the county seat. With FIPS code of 43, Jefferson County has a population of 12,470 and area of 1,657 square miles (4,292 km²).

List of all cities in Jefferson County, MT alphabetically