Montana

Gallatin

118,960
2020 population
1870
first census record
16
census records

About Gallatin

Gallatin, Montana, first appears in the United States federal census in 1870, when it recorded a population of 1,578. At the most recent census, in 2020, its population stood at 118,960.

The county's recorded population has risen across the decades to its highest level in 2020.

On the ground today, one documented military engagement has been recorded within the county, among them Bozeman Vigilance Committee Hangings, MT, and 108 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
2020118,960
201089,513
200067,831
199050,463
198042,865
197032,505
196026,045
195021,902
194018,269
193016,124
192015,864
191014,079
19009,553
18906,246
18803,643
18701,578
Source

Population data from the United States decennial census, U.S. Census Bureau (public domain).

Battles & engagements in Gallatin

Military engagements that took place in Gallatin, Montana.

Bozeman Vigilance Committee Hangings, MT
1866

Historic places in Gallatin

National Register of Historic Places listings in Gallatin, Montana.

First Presbyterian Church
Bozeman
Airway Radio Station
Three Forks
Bozeman Carnegie Library
Bozeman
Crail Ranch Buildings
Gallatin Gateway
Cooper Park Historic District
Bozeman
Lonesomehurst Cabin
West Yellowstone
Sacajawea Hotel
Three Forks
Spieth and Krug Brewery
Bozeman
Brandenburg House
Bozeman
Bohart House
Bozeman
Three Forks of the Missouri
Three Forks
Lewis, Samuel, House
Bozeman
Malmborg School
Bozeman
Madison Buffalo Jump State Monument
Logan
Eagle's Store
West Yellowstone
Bon Ton Historic District
Bozeman
Three Valleys State Bank
Three Forks
Watkins Creek Ranch
West Yellowstone
Gallatin Gateway Inn
Gallatin Gateway
Belgrade City Hall and Jail
Belgrade
Bozeman National Fish Hatchery
Bozeman
West Yellowstone Oregon Shortline Terminus Historic District
West Yellowstone
Hotel Baxter
Bozeman
Bozeman Brewery Historic District
Bozeman
Browse all Montanahistoric sites ›

Other counties in Montana

Explore census history and historic records for more Montana counties.

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Everything a full report reveals about Gallatin County, Montana

This page charts the census history of Gallatin County, Montana. A full Aubrey report for an address here pulls together everything the historical record holds about the ground, from the earliest settlement to the twentieth century:

Overview
An interactive map of the location with historic sites, battles and Native heritage plotted, and its full story era by era.
The Land
The historic sites and place names around the location, and how this land was settled and used.
Geology
The bedrock beneath the site, its age and rock type, reaching back millions of years.
LiDAR Terrain
Laser-scanned terrain that reveals earthworks and old features hidden in the landscape.
Conflict & War
The battles, raids and skirmishes fought near here, across every era of American conflict.
The Civil War
The Civil War on this ground, 1861 to 1865: who held it, and the battles, camps and regiments nearby.
The Soldiers
The men who marched from here in the Civil War, named and traced where the record allows.
Native Heritage
The Native nations who held this land, mapped across time from before European contact to today.
Settlement
Who claimed and held this ground, from Indigenous homelands through the colonial powers to the United States.
The Community
How the town grew, who came, and what kind of place it became, traced through the census record.
Rivers & Rail
The rivers, canals and railroads that connected this place between 1830 and 1911.
Notable People
The people born, buried or genuinely tied to this exact place, with their stories.
Historical Maps
Historic maps of the location layered over how it looks today.
Finds & Access
Museum objects tied to the area, and the laws on searching, collecting and access here.
Literature
The old books, county histories and archives that mention this place, quoted with their sources.
Spotlight
A deep dive into the most remarkable, lesser-known history of the place, traced back to the record.
Points of Interest
The most significant historic sites and landmarks near the location, and why they matter.
Timeline
The whole story of the location told era by era, from first peoples to the present day.
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Frequently asked about Gallatin

When does Gallatin first appear in the US census?
Gallatin, Montana first appears in the federal census in 1870, with a recorded population of 1,578.
What is the population of Gallatin?
At the most recent federal census (2020), Gallatin had a recorded population of 118,960.
Were any battles fought in Gallatin?
1 documented military engagement took place in Gallatin, including Bozeman Vigilance Committee Hangings, MT.
How many historic places are in Gallatin?
108 sites are listed on the National Register of Historic Places in Gallatin, Montana.
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