Anaconda, county seat of Deer Lodge County, which has a consolidated city-county government, is located in southwestern Montana, United States. Located at the foot of the Anaconda Range (known locally as the "Pintlers"), the Continental Divide passes within 8 mi (13 km) south of the community. As of the 2010 census the population of the consolidated city-county was 9,298, with a per capita personal income of $20,462 and a median household income of $34,716. It had earlier peaks of population in 1930 and 1980, based on the mining industry. As a consolidated city-county area, it ranks as the ninth most populous city in Montana, but as only a city is far smaller. Central Anaconda is 5,335 ft (1,626 m) above sea level, and is surrounded by the communities of Opportunity and West Valley. The county area is 741 square miles (1,920 km2), characterized by densely timbered forestlands, lakes, mountains and recreation grounds. The county has common borders with Beaverhead, Butte-Silver Bow, Granite, Jefferson and Powell counties.

Philipsburg is a town in and the county seat of Granite County, Montana, United States. The population was 820 at the 2010 census. The town was named after the famous mining engineer Philip Deidesheimer, who designed and supervised the construction of the ore smelter around which the town originally formed. He platted the townsite in 1867.

Butte is the county seat of Silver Bow County, Montana, United States. In 1977, the city and county governments consolidated to form the sole entity of Butte-Silver Bow. The city covers 718 square miles (1,860 km2), and, according to the 2010 census, has a population of 33,503, making it Montana's fifth largest city. It is served by Bert Mooney Airport with airport code BTM. The city used to be home to many mines, especially copper, mines, such as the Anaconda Copper Mine. Established in 1864 as a mining camp in the northern Rocky Mountains on the Continental Divide, Butte experienced rapid development in the late-nineteenth century, and was Montana's first major industrial city. In its heyday between the late-nineteenth and early-twentieth centuries, it was one of the largest copper boomtowns in the American West. Employment opportunities in the mines attracted surges of Asian and European immigrants, particularly the Irish; as of 2017, Butte has the largest population of Irish Americans per capita of any city in the United States.Butte was also the site of various historical events involving its mining industry and active labor unions and Socialist politics, the most famous of which was the labor riot of 1914. Despite the dominance of the Anaconda Copper Mining Company, Butte was never a company town. Other major events in the city's history include the 1917 Speculator Mine disaster, the largest hard rock mining disaster in world history. Over the course of its history, Butte's mining and smelting operations generated in excess of $48 billion worth of ore, but also resulted in numerous environmental implications for the city: The upper Clark Fork River, with headwaters at Butte, is the largest Superfund site in the United States, and the city is also home to the Berkeley Pit. In the late-twentieth century, cleanup efforts from the EPA were instated, and the Butte Citizens Technical Environmental Committee was established in 1984. In the 21st century, efforts at interpreting and preserving Butte's heritage are addressing both the town's historical significance and the continuing importance of mining to its economy and culture. The city's Uptown Historic District, on the National Register of Historic Places, is one of the largest National Historic Landmark Districts in the United States, containing nearly 6,000 contributing properties. The city is also home to Montana Technological University, a public engineering and technical university.

Idaho ( (listen)) is a state in the Pacific Northwest region of the United States. It borders the state of Montana to the east and northeast, Wyoming to the east, Nevada and Utah to the south, and Washington and Oregon to the west. To the north, it shares a small portion of the Canadian border with the province of British Columbia. With a population of approximately 1.8 million and an area of 83,570 square miles (216,400 km2), Idaho is the 14th largest, the 13th least populous and the 7th least densely populated of the 50 U.S. states. The state's capital and largest city is Boise. For thousands of years Idaho has been inhabited by Native American peoples. In the early 19th century, Idaho was considered part of the Oregon Country, an area disputed between the United States and the British Empire. It officially became U.S. territory with the signing of the Oregon Treaty of 1846, but a separate Idaho Territory was not organized until 1863, instead being included for periods in Oregon Territory and Washington Territory. Idaho was eventually admitted to the Union on July 3, 1890, becoming the 43rd state. Forming part of the Pacific Northwest (and the associated Cascadia bioregion), Idaho is divided into several distinct geographic and climatic regions. The state's north, the relatively isolated Idaho Panhandle, is closely linked with Eastern Washington with which it shares the Pacific Time Zone—the rest of the state uses the Mountain Time Zone. The state's south includes the Snake River Plain (which has most of the population and agricultural land). The state's southeast incorporates part of the Great Basin. Idaho is quite mountainous, and contains several stretches of the Rocky Mountains. The United States Forest Service holds about 38% of Idaho's land, the highest proportion of any state.Industries significant for the state economy include manufacturing, agriculture, mining, forestry, and tourism. A number of science and technology firms are either headquartered in Idaho or have factories there, and the state also contains the Idaho National Laboratory, which is the country's largest Department of Energy facility. Idaho's agricultural sector supplies many products, but the state is best known for its potato crop, which comprises around one-third of the nationwide yield. The official state nickname is the "Gem State", which references Idaho's natural beauty.