Gallatin County, Montana
Gallatin County: county in Montana, United States
About
Gallatin County is a county located in the U.S. state of Montana. As of the 2010 census, the population was 89,513 and a population density of 13 people per km². After 10 years in 2020 county had an estimated population of 116,806 inhabitants. Its county seat is Bozeman. The county was created 162 years ago in 1863.
County Snapshot
Gallatin County at a glance
Gallatin County currently has 6 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.
Mapped populated places
6
These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.
Montana counties
56
Open related pagesLargest city
BozemanPopulation 50,970
Top linked places
Quick Facts about Gallatin County
| Population | 116,806 (2020) |
| Country | United States of America |
| State | Montana (United States) |
| Different from | Gallatin County, Gallatin County |
| Twitter username | gallatin_county |
| Area | 6816 km2 |
| Water as percent of area | 1.1% |
| Land as percent of area | 98.9% |
| Latitude & Longitude | 45.5405,-111.1704 |
| Named for | Albert Gallatin |
| Altitude | 4,711 feet / 1436 meters |
| Capital | Bozeman |
| Establishment | January 01, 1864 |
| Time Zone | America/Denver |
| Local time | 08:58:33 (17th April 2026) |
| Density | 17 Pop. per km² as of 2020 |
| Population growth | 23.37% (2010-2020) |
| Weather | 18℉ Snow Likely 7-days weather |
Geography
Gallatin County is located at 45°32'26"N 111°10'13"W (45.5404900, -111.1703500). It has 3 neighbors: Fremont County, Broadwater County and Meagher County.
Gallatin County map
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The largest city of Gallatin County is Bozeman with a population of 50,970. Other cities include, Belgrade population 10,390, Three Forks population 1,926, Manhattan population 1,917 and West Yellowstone population 1,372. See all Gallatin County cities & populated places.
Gallatin County Populated Places
Cities, towns, neighborhoods & other populated places in Gallatin County.
| City Name | Population | Title |
|---|---|---|
| Bozeman | 50,970 | Town in Gallatin County, Montana, United States |
| Belgrade | 10,390 | City in Gallatin County, Montana, USA |
| Big Sky | 2,308 | Census designated place |
| Three Forks | 1,926 | City in Gallatin County, Montana, United States |
| Manhattan | 1,917 | Town in Montana |
| West Yellowstone | 1,372 | Town of the United States |
Weather
Snow likely. Mostly cloudy, with a low around 18. West wind around 7 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch...
7-Day Forecast- Bozeman
Demographics
The population of Gallatin County increased by 23.37% in 10 years.
| Year | Population | % Change | Method |
|---|---|---|---|
| 2010 | 89,513 | - | census |
| 2011 | 91,375 | 2.04% | estimation process |
| 2012 | 92,570 | 1.29% | estimation process |
| 2013 | 94,798 | 2.35% | estimation process |
| 2014 | 97,508 | 2.78% | estimation process |
| 2015 | 100,882 | 3.34% | estimation process |
| 2016 | 104,739 | 3.68% | estimation process |
| 2017 | 108,576 | 3.53% | estimation process |
| 2018 | 111,682 | 2.78% | estimation process |
| 2019 | 114,434 | 2.4% | estimation process |
| 2020 | 116,806 | 2.03% | estimation process |
People born in Gallatin County (1)
American sport shooter Samuel Sharman was born in Gallatin County
Other places with the same name (2)
- Gallatin County, Kentucky county in Kentucky, United States with a population of 8,779 people.
- Gallatin County, Illinois county in Illinois, United States with a population of 4,793 people.
Montana Other Counties (more counties)
| County Name | Population | Title |
|---|---|---|
| Yellowstone County | 162,990 | County in Montana, United States of America |
| Missoula County | 121,630 | County in Montana, United States |
| Billings | 117,445 | The most populous city in Montana. |
| Flathead County | 105,851 | County in Montana, United States |
| Cascade County | 81,346 | County in central Montana, United States |
| Missoula | 76,848 | The most populous city in Missoula County, Montana. |
| Lewis and Clark County | 70,229 | County in Montana, United States |
| Great Falls | 58,353 | Town in Cascade County, Montana, United States |
| Bozeman | 50,970 | Town in Gallatin County, Montana, United States |
| Ravalli County | 45,002 | County in Montana, United States |
| Silver Bow County | 35,180 | County in Montana, United States |
| Butte | 34,190 | Consolidated city-county in Montana, United States |
| Helena | 33,737 | State capital of Montana, United States and seat of Lewis and Clark County |
| Lake County | 30,986 | County in Montana, United States |
| Kalispell | 25,329 | City in Flathead County, Montana, United States |
| Lincoln County | 20,343 | County in Montana, United States |