Population128,740 (2025 estimate)
A Valley of Learning, Work, and Adventure
Gallatin County, MontanaExplore Gallatin County, Montana, through the Gallatin Valley, university life in Bozeman and routes toward mountain recreation. This guide brings local places and practical public resources together so you can plan an outing, find a service or get to know the area. Start with Bozeman, the county seat, then explore the communities and landscapes around it. Follow the linked organizations for current schedules, access details and the information you need before heading out.
County at a Glance
Population128,740 (2025 estimate)
County seatBozeman
Largest communityBozeman
Established1865
ZIP coverage12
Total area2,633.8 sq mi (land and water; 2020 boundary data)
Major routesI-90, US 191, US 287
Area code406Meet Local Businesses
Support the businesses that help make our communities thrive. From family-owned shops and restaurants to trusted local services, discover businesses worth visiting throughout the county.

Gallatin County
Gallatin County dates to 1865 and Montana’s territorial period. Bozeman became the county seat, while farming and ranching helped shape the surrounding valley. Rail service and the growth of higher education added new connections and opportunities. Montana State University remains an important part of Bozeman’s identity, and the county’s communities extend from Belgrade and Manhattan toward the mountains and West Yellowstone. This blend of agricultural roots, research, local enterprise and outdoor travel gives the county a character that is both established and continually changing.
A typical week can include campus activities, school commitments, local shopping and a drive into the mountains. Bozeman offers cultural institutions and a busy downtown; Belgrade and Manhattan have their own community rhythms and services. Travel toward West Yellowstone introduces a different pace and seasonal demands. Check public road conditions before longer trips, use official school and county resources for practical decisions, and contact individual businesses for current services rather than assuming every destination operates year-round.
What shapes us
Living Heritage
Discover how agriculture, early territorial settlement and education helped shape local identity. Historic places and community organizations offer starting points for understanding the county’s past and its continuing story.
Working Landscapes
Explore the Museum of the Rockies and the Bridger mountain landscape alongside the landscapes that support everyday life. Local businesses and outdoor destinations connect the county’s natural setting with practical work and recreation.
Community Connections
University programs, local shops, mountain activities and growing communities bring residents and visitors into the same local places. Follow current programs and schedules to find opportunities that match your interests and the season.
Gallatin County in Pictures
A closer look at local places and landscapes.
Regular Weed Board Meeting Agenda
Regular Weed Board Meeting Agenda Update: Minutes added or updated
Read the Story Oct 1, 2026 • 2 min readAround Gallatin County
Stories from every corner of Gallatin County.
Regular Weed Board Meeting Agenda
Regular Weed Board Meeting Agenda Update: Minutes added or updated
Oct 1, 2026 • 2 min read
Regular Weed Board Meeting Agenda
Regular Weed Board Meeting Agenda
Sep 24, 2026 • 2 min read
KBZK Bozeman Area Weather: The sun & warmth continue Thursday, but it won't last
A ridge of high pressure brought more sunshine and unseasonable warmth to southwest Montana on Wednesday. Thursday will…
Oct 7, 2026 • 2 min read
BSRAD unanimously moves TEDD/TIF proposal forward
By Carli Johnson STAFF WRITER A proposal to establish a Targeted Economic Development District and tax increment financing…
Oct 7, 2026 • 2 min read
Five Hidden Stops Worth The Drive
Scenic places and local favorites worth discovering.
June 7, 2026 • 5 min readMeet Local Businesses
Support the businesses that help make our communities thrive. From family-owned shops and restaurants to trusted local services, discover businesses worth visiting throughout the county.
Gallatin County resources
Find official agencies and useful organizations for everyday needs. Open the relevant resource for current services and contact information.
Government
Schools
Hospitals
Public Safety
Disaster and Emergency Services
Emergency Services
State Parks
Trails
Forest Service lands and trails
Utilities
Montana Public Service Commission
Libraries
Courts
Montana Legal Services Association
DMV
Transportation
Postal Services
Veterans
Montana Department of Military Affairs
Employment
Find your way around Gallatin County
Practical answers for residents and visitors.
Frequently asked questions
Start here, then follow the linked organization for current details.
Bozeman is the county seat of Gallatin County. Start with Gallatin County government for department contacts and public services.
Start with Museum of the Rockies and the other history and cultural destinations in the directory. Confirm each attraction’s current schedule before visiting.
Bozeman, Belgrade, Manhattan, West Yellowstone provide starting points within Gallatin County. Each has its own community setting; check local businesses and public resources when planning your route. Follow Gallatin County government for public-service connections.
Use Montana 511 for current conditions. Major routes associated with the county include I-90, US 191, US 287; check the specific route before travel.
Start with Office of Public Instruction and the Office of Public Instruction. Confirm enrollment and attendance boundaries with the relevant school district.
Bozeman Health is a local healthcare starting point. Use the provider’s own site for current locations, services and contact information.
Use Montana Fish, Wildlife & Parks and the land-management links in the resources section. Confirm access, permits, fees and seasonal restrictions for the specific destination.
Gallatin County government provides the official starting point for departments, meetings and records. Contact the relevant office to confirm its procedures and opening hours.
Start with Montana Veterans Affairs or VA Montana Health Care for program and location information.
Use MontanaWorks and the Department of Labor & Industry. Check employers directly for current openings and requirements.
Museum of the Rockies is one starting point for a family outing in Gallatin County. Use the Kids’ Fun and Outdoor Fun listings, then confirm age suitability, schedules and admission directly with the operator.
Meet Local Businesses
Support the businesses that help make our communities thrive. From family-owned shops and restaurants to trusted local services, discover businesses worth visiting throughout the county.
Find something fun
Explore local placesPlan your next stop with these specific local destinations.

