Gallatin County is located in the U.S. state of Montana. With its county seat in Bozeman, it is the second-most populous county in Montana, with a population of 118,960 in the 2020 Census. The county's prominent geographical features are the Bridger mountains in the north, and the Gallatin mountains and Gallatin River in the south, named by Meriwether Lewis in 1805 for Albert Gallatin, the United States Treasury Secretary who formulated the Lewis and Clark Expedition. At the southern end of the county, West Yellowstone's entrance into Yellowstone National Park accounts for around half of all park visitors. Big Sky Resort, one of the largest ski resorts in the United States, lies in Gallatin and neighboring Madison counties, midway between Bozeman and West Yellowstone.

Founded: 1865
Named for: Gallatin River (Albert Gallatin)
Seat: Bozeman
Largest city: Bozeman
Total: 2,632 sq mi (6,816.85 km²)
Land: 2,603 sq mi (6,741.74 km²)
Water: 29 sq mi (75.11 km²), 1.1
Time zone: Mountain: UTC-7-6
Website: [www.gallatin.mt.gov]
Twitter profile: gallatin_county
Official Website: http://www.gallatin.mt.gov
Wikidata description: county in Montana, United States
Wikidata id: Q387978
Wikidata label: Gallatin County
Wikidata aliases: Array
Source
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