Gallatin County, Montana, USA
County or equivalent
Location overview
Gallatin County, Montana is a fast-growing county in southwest Montana with its county seat in Bozeman and communities including Belgrade, Manhattan, Three Forks and West Yellowstone. The county spans the Gallatin Valley and surrounding mountain areas and includes major residential, educational, tourism, transportation and outdoor-recreation assets, with Yellowstone National Park access through West Yellowstone. The U.S. Census Bureau estimated Gallatin County’s population at 126,984 in 2024, making it one of Montana’s most populous counties and an important regional government and economic center.