Gallatin County, Montana Demographics 2026

Name: Gallatin County, Montana Demographics
Creator: U.S. Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

Gallatin County, Montana has a population of 124,074, the 2nd most populous county in Montana. The median household income is $93,528 and the median home value is $667,600. The poverty rate is 9.5%.

Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes

Gallatin County Quick Facts

Population 124,074

Median Household Income $93,528

Median Home Value $667,600

Poverty Rate 9.5%

Unemployment Rate 2.3%

Median Age 34.2 years

Homeownership Rate 61.1%

Affordability Ratio 7.1x

Bachelor's Degree+ 54.3%

High School Graduation 97.2%

Cities/Places 19

Population 124,074 2nd of 56

Median Income $93,528 29% higher than state

Poverty Rate 9.5%

Unemployment 2.3%

How Gallatin County Changed

Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.

Metric	2019–2023	2020–2024	Change
Population	122,194	124,074	+1.5%
Median household income	$87,454	$93,528	+6.9%
Median home value	$604,900	$667,600	+10.4%

Median Household Income

Gallatin

$93,528

$72,509

National

$80,734

Median Home Value

Gallatin

$667,600

$375,800

National

$332,700

Economy & Housing

Household Income Distribution

Under $25K 11.0%

$25K-$50K 13.3%

$50K-$100K 28.4%

$100K+ 47.3%

Detailed income brackets

Under $10K

3.0%

$10K-$15K

2.7%

$15K-$20K

2.3%

$20K-$25K

2.9%

$25K-$30K

2.2%

$30K-$35K

2.6%

$35K-$40K

3.0%

$40K-$45K

2.8%

$45K-$50K

2.8%

$50K-$60K

5.7%

$60K-$75K

9.0%

$75K-$100K

13.7%

$100K-$125K

11.8%

$125K-$150K

9.3%

$150K-$200K

10.2%

$200K+

16.0%

Employment

2.3% Unemployment Rate State: 3.6%|National: 5.2%

71.2% Labor Force Participation

Housing Overview

Owner 61.1%

Renter 38.9%

Affordability Index Very Expensive

7.1x home value to income ratio

Median gross rent $1,694/mo 21.7% of median household income annually

People & Demographics

Age Distribution

Under 18

18.8%

18-34

32.4%

35-54

25.2%

55-74

18.8%

75+

4.8%

Race & Ethnicity

Diversity Index

Very Low Diversity

A less diverse community where one racial or ethnic group represents a large majority.

State average: 29 | National average: 61

Education

Educational Attainment (Adults 25+)

Cities & Places in Gallatin County

City	Population	Median Income	Poverty	Home Value
Bozeman	56,114	$85,747	13.7%	$687,900
Belgrade	11,872	$97,328	11.2%	$535,200
Four Corners	5,791	$100,917	6.3%	$648,400
Big Sky	2,445	$138,805	4.7%	$1,137,900
Manhattan	2,288	$87,865	2.9%	$517,800
King Arthur Park	1,992	$109,106	7.4%	N/A
Three Forks	1,919	$79,784	6.2%	$395,800
West Yellowstone	1,474	$58,839	13.1%	$504,300
Churchill	1,167	$108,281	6.3%	$690,600
Ponderosa Pines	950	$73,681	18.0%	N/A
Gallatin Gateway	933	$82,500	9.8%	$814,400
Springhill	187	$79,115	6.4%	N/A
Sedan	182	$93,906	0.0%	N/A
Willow Creek	181	$62,857	9.9%	$450,000
Amsterdam	130	$85,750	11.5%	$480,000
Gallatin River Ranch	127	$101,250	0.0%	$1,375,000
Logan	111	N/A	0.0%	N/A
Hebgen Lake Estates	85	$41,563	0.0%	$562,500
Bridger	73	N/A	0.0%	N/A

Explore Montana Rankings

Cities by Population All cities ranked by size Richest Cities Ranked by median income Most Educated By bachelor's degree rate Most Affordable By housing affordability

Population Overview

Gallatin County is located in Montana with a total population of 124,074. It is the 2nd most populous county out of 56 in Montana. The county encompasses 19 Census-designated places.

Age Demographics

The median age in Gallatin County is 34.2 years. This is 15% lower than the state median of 40.4 years.

Economy, Income & Housing

The median household income in Gallatin County is $93,528. This is 29% higher than the state median of $72,509. It is also 16% higher than the national median of $80,734. The poverty rate stands at 9.5%. This is 17% lower than the state poverty rate of 11.5%. The unemployment rate is 2.3%. This is 36% lower than the state rate of 3.6%. The median home value is $667,600. Housing costs are 78% higher than the state median of $375,800. The home-value-to-income ratio of 7.1x suggests that housing affordability is a significant concern for many residents. 61.1% of occupied housing units are owner-occupied. This homeownership rate is 12% lower than the state average of 69.2%.

Race & Ethnicity

Gallatin County has a predominantly White (non-Hispanic) population, comprising 87.5% of all residents. Hispanic or Latino residents account for 5.4%. The Asian population is significantly higher than the state average (1.2% vs 0.8%).

Education

54.3% of residents aged 25 and older hold a bachelor's degree or higher. This places Gallatin County in the top 10% of all counties in the state for educational attainment. This is 54% higher than the state rate of 35.2%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 97.2%. Notably, 20.3% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All figures for Gallatin County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against Montana and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.

Frequently Asked Questions

What is the population of Gallatin County, Montana?

Gallatin County has a population of 124,074, making it the 2nd most populous county in Montana.

What is the median income in Gallatin County?

The median household income in Gallatin County is $93,528 with a poverty rate of 9.5%.

How many cities are in Gallatin County, Montana?

Gallatin County contains 19 Census-designated places.