Gallatin County, Montana
Gallatin County Courthouse in Bozeman
Location within the U.S. state of Montana
Montana's location within the U.S.
|Named for||Albert Gallatin|
|• Total||2,632 sq mi (6,820 km2)|
|• Land||2,603 sq mi (6,740 km2)|
|• Water||29 sq mi (80 km2) 1.1%%|
| • Estimate |
|• Density||41/sq mi (16/km2)|
|Time zone||UTC−7 (Mountain)|
|• Summer (DST)||UTC−6 (MDT)|
Gallatin County is a county found in the U.S. state of Montana. As of the 2010 United States Census, there were 89,513 people, making it the third-most populous county in Montana. Its county seat in Bozeman. A small part of Yellowstone National Park lies in the southeastern portion of the county.