Gallatin County Flag

Gallatin County

State:
Montana
County Seat:
Bozeman

Gallatin County's estimated 2025 population is 129,351 with a growth rate of 1.15% in the past year according to the most recent United States census data. Gallatin County is the 2nd largest county in Montana. The 2010 population was 89,662 and has seen a growth of 44.27% since that time.

129,351
Total Population
50
Population Density (mi²)
2
Population Rank (State)
1.5K 1.15%
Annual Population Growth

Gallatin County Population

Gallatin County Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Gallatin County includes 89.67% White, and smaller percentages for other race, Asian, Native American, Black or African American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White109,56789.67%
Two or more races7,0665.78%
Other race2,4832.03%
Asian1,5631.28%
Native American9200.75%
Black or African American5930.49%
Native Hawaiian or Pacific Islander20%

Gallatin County Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Gallatin County's average per capita income is $53,658. Household income levels show a median of $87,454. The poverty rate stands at 10.21%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Married Families$122,666$165,959
Families$111,714$152,110
Households$87,454$124,551
Non Families$60,156$84,071

$53,658

Average Income

$87,454

Median Household Income

10.21%

Poverty Rate