Butte, Montana. Photo: Larry McKee, L McKee Photography. PLEASE NOTE: This image comes in sizes 8x24, 10x30, 12x36, 20x60. Butte is a consolidated city-county and 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. Butte, with a population of 34,768, is 5,538' above sea level, adding it to the list of mile-high cities.