Silver Bow County is a county located in the State of Montana. As of the 2010 census, the population was 34,200. Its county seat is Butte. In 1977, the city and county governments consolidated to form the single entity of Butte-Silver Bow.
Granite County is a county located in the U.S. state of Montana. As of the 2010 census, the population was 3,079. Its county seat is Philipsburg.
Jefferson County is a county located in the U.S. state of Montana. As of the 2010 census, the population was 11,406. Its county seat is Boulder. The county was created in 1865 and named for President Thomas Jefferson.
Deer Lodge County is a county located in the U.S. state of Montana. As of the 2010 census, the population was 9,298. It forms a consolidated city-county government with its county seat of Anaconda. The county was founded in 1865.
Powell County is a county located in the U.S. state of Montana. As of the 2010 census, the population was 7,027. Its county seat is Deer Lodge.
Beaverhead County is the largest county by area in the U.S. state of Montana. As of the 2010 census, the population was 9,246. Its county seat is Dillon. The county was founded in 1865.
Madison County is a county located in the U.S. state of Montana. As of the 2010 census, the population was 7,691. Its county seat is Virginia City. The county was founded in 1865.