Missoula County, Montana Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 3rd-largest in Montana
The population of Missoula County, Montana is 119,639 as of the 2023 American Community Survey, making it the 3rd-largest county in Montana. The median household income is $71,246, the median home value is $423,100, and the median age is 37.0.
The population of Missoula County has grown 11.9% since 2010 (109,471 → 122,546), a +0.81% annualized rate.
119,639
Population
+0.81%
Annual growth
46
People / sq mi
$71,246
Median Income
$423,100
Median Home Value
Missoula County covers 2,593 sq mi of land at 46.1 people per square mile.
About Missoula County, MT
Missoula County is a county in Montana with a population of 119,639. It ranks #3 among counties in Montana by population. The median age is 37.0, younger than the national median. The population is 50.3% male and 49.7% female.
The median household income in Missoula County is $71,246, near the US median of $74,580. 4.8% of residents live below the federal poverty level. Home values sit at a median of $423,100, with monthly rent averaging $1,125. The homeownership rate of 59.7% is lower than the national rate of 64.8%.
Educational attainment in Missoula County reflects 45.9% of adults 25 and older holding a bachelor's degree or higher, above the national average of 34.3%. Roughly 13.0% of workers primarily work from home, similar to the national work-from-home rate of 14.2%. The average commute is 18.7 minutes each way.
Missoula County Population History (2010-2024)
The county of Missoula County had a population of 109,471 in 2010 and 122,546 in 2024, a 11.9% growth over 14 years. The peak was 122,546 in 2024. Average annual growth rate: 0.81%.
122,546
Population (2024)
109,471
Population (2010)
122,546
Peak (2024)
0.81%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 109,471 |
| 2011 | 110,270 |
| 2012 | 111,104 |
| 2013 | 111,988 |
| 2014 | 112,924 |
| 2015 | 114,281 |
| 2016 | 116,587 |
| 2017 | 118,068 |
| 2018 | 118,959 |
| 2019 | 120,066 |
| 2020 | 118,353 |
| 2021 | 119,857 |
| 2022 | 120,931 |
| 2023 | 121,672 |
| 2024 | 122,546 |
Race & Ethnicity
| White | 87.6% |
| Black or African American | 0.6% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 4.5% |
| Two or More Races | 0.0% |
Age & Sex
37.0
Median Age
49.7%
Female
50.3%
Male
16.6%
Age 65+
Age Distribution
Children (under 15): 15.1% · Seniors (65+): 16.6%
Income & Poverty
| Median household income | $71,246+$1,324 vs state |
| Mean household income | $97,840 |
| Per-capita income | $43,142 |
| Poverty rate | 4.8%-2.3% vs state |
| Unemployment rate | 3.1% |
| Employment-to-population | 66.4% |
Top Industries by Employment
The largest employment sector in Missoula County is professional & business services, accounting for 25.7% of workers.
How residents commute
1.5%
Drive alone
3.3%
Carpool
70.2%
Public transit
13.0%
Work from home
18.7 min
Avg commute
Housing
$423,100+$85,000 vs state
Median home value
$1,125
Median rent
59.7%
Homeownership rate
56,008
Total housing units
92.2%
Occupied
7.8%
Vacant
40.3%
Renter-occupied
Social & access
93.6%
With health insurance
96.2%
With broadband internet
49.3%
Foreign-born
8.5%
Veterans (18+)
12.3%
With a disability
95.3%
Speak language other than English at home
Education
96.6%
High School+
45.9%
Bachelor's+
Largest cities in Montana
Other counties in Montana
Part of Montana
Metro areas in Montana
County rankings
Frequently Asked Questions
Missoula County, Montana has a population of 119,639 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 3rd-largest county in Montana. Population density is 46 people per square mile.
The population of Missoula County has grown 11.9% since 2010 (109,471 → 122,546), a +0.81% annualized rate.
The median household income in Missoula County, Montana is $71,246, with mean (average) household income of $97,840 and per-capita income of $43,142. 4.8% of residents live below the federal poverty level.
In Missoula County, the largest racial and ethnic groups are White (87.6%), Hispanic or Latino (4.5%), Black or African American (0.6%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Missoula County, Montana is 37.0 years. Residents are 49.7% female and 50.3% male.
The median home value in Missoula County is $423,100 and median monthly rent is $1,125. 59.7% of occupied housing units are owner-occupied. The county has 56,008 total housing units, 7.8% of which are vacant.
The largest employment sector in Missoula County, Montana is professional, scientific, and management services, employing 25.7% of workers. The unemployment rate is 3.1%.
Billings is among the largest cities associated with Missoula County, Montana, with a population of 118,321.
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Full rankings of Montana counties
Statewide data for Montana
Population, race, income, age, and trends across Montana
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.