What is the largest city in Gallatin County, MT?

Bozeman is the largest city or town in Gallatin County, with about 56,114 residents.

How many ZIP codes are in Gallatin County?

Gallatin County includes 8 ZIP Code Tabulation Areas, including 59714, 59715, 59718, 59730, 59741.

What is the population of Gallatin County, MT?

About 124,074 people live in Gallatin County, based on American Community Survey 5-year estimates.

What counties border Gallatin County?

Gallatin County borders Park County, WY, Teton County, WY, Park County, Fremont County, ID, Jefferson County, Madison County, Broadwater County, Meagher County.

Gallatin County, MT: Cities, ZIP Codes & Local Data

Population

124,074

Land area

2,605sq mi

People per sq mi

48

ZIP codes

8

Gallatin County at a glance

Gallatin County is about 6.2 times as dense as Montana as a whole.
It is the 2nd most populous of 56 counties in Montana.
Households here earn a median of $93,528 a year, 29% more than the Montana figure of $72,509.
A typical owner-occupied home is valued at $667,600 (78% above Montana) and median rent is $1,694 a month.
The biggest population centers are Bozeman (56,114), Belgrade (11,872) and Four Corners (5,791).

Local data for Gallatin County, MT

Counts from official public data

Housing and community stats

Gallatin County, MT, American Community Survey 2020-2024

Full profile

Median household income

$93,528

Poverty rate

9.5%

Median home value

$667,600

Prices +0.1% in a year

Median rent

$1,694/mo

Homeownership

61.1%

Bachelor's or higher

54.3%

Median age

34.2

Average commute

18.3 min

Largest reported origins and ancestries: German Americans (27,702), Irish Americans (16,974), Norwegian Americans (7,914).

Home values and rents Income, education and commute

Economy and federal money

Jobs, income, federal spending and pandemic loans

Details

Unemployment rate

2.0%

Sep 2026, -0.4 pts in a year

Average annual pay

$70,519

74,277 jobs, 2025

Income per person

$94,573

BEA, 2024

Federal spending

$836M

FY 2026, $7,031 per person

PPP loans

$385M

5,858 loans, 46,041 jobs reported

Campaign donations

$1.9M

Itemized, 2026 cycle

Economy Federal spending PPP loans

How people get to work

Gallatin County, MT, workers 16 and older. American Community Survey 5-year estimates

Drove alone68.6%
Carpooled7.4%
Public transit0.5%
Walked5.3%
Bicycle1.8%
Taxi, ride-hailing, motorcycle or other0.9%
Worked from home15.5%

Average one-way commute: 18.3 minutes for people who do not work from home.

Environment and hazard risk

Gallatin County, MT, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively Moderate

Top: winter weather

Storm events since 1996

594

Most often winter storm

Flood insurance policies

323

0.8% of homes, county

July high / Jan low

78° / 9°F

23.3 inches of rain a year

Hazards, floods and storm history Check a flood zone 84 historic places

Health statistics

Share of adults in Gallatin County, MT, CDC PLACES estimates

All 40 measures

Obesity

23.0%

U.S. 33.3% -10.3 pts

Diabetes

6.7%

U.S. 12.1% -5.4 pts

Smoking

9.7%

U.S. 12.8% -3.1 pts

Uninsured (18-64)

8.3%

U.S. 11.1% -2.8 pts

Cities, towns and ZIP codes in Gallatin County

Population shown

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Frequently asked questions

What is the largest city in Gallatin County, MT?: Bozeman is the largest city or town in Gallatin County, with about 56,114 residents.
How many ZIP codes are in Gallatin County?: Gallatin County includes 8 ZIP Code Tabulation Areas, including 59714, 59715, 59718, 59730, 59741.
What is the population of Gallatin County, MT?: About 124,074 people live in Gallatin County, based on American Community Survey 5-year estimates.
What counties border Gallatin County?: Gallatin County borders Park County, WY, Teton County, WY, Park County, Fremont County, ID, Jefferson County, Madison County, Broadwater County, Meagher County.