Missoula County Population

1870–2026

124.56K

2026 projection

5.3% since 2020 (increase)

020K40K60K80K100K120K140K18801900192019401960198020002020

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Missoula County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
2026124,555+1,0420.84%
2025123,513+1,0420.85%
2024122,471+9670.80%
2023121,504+6450.53%
2022120,859+9850.82%
2021119,874+1,5371.30%
2020118,337-1,7291.44%
2019120,066+1,1070.93%
2018118,959+8910.75%
2017118,068+1,4811.27%

Showing 10 of 30 years.

Missoula County Demographics

37.1median age

Median age

Female37.8 yrs
Male36.6 yrs

Adults

98,735
20,683 seniors (65+) · 21% of adults78,052 other adults

Sex

Female 49.8% · 60,134Male 50.2% · 60,538

Population by age

MaleFemale85+ years, male: 88285+ years, female: 1,13680–84 years, male: 1,00680–84 years, female: 1,06375–79 years, male: 1,75075–79 years, female: 2,02070–74 years, male: 2,89870–74 years, female: 3,11465–69 years, male: 3,27565–69 years, female: 3,53960–64 years, male: 3,37060–64 years, female: 3,62555–59 years, male: 3,12055–59 years, female: 3,18550–54 years, male: 3,50750–54 years, female: 3,13645–49 years, male: 3,22945–49 years, female: 3,39040–44 years, male: 4,02540–44 years, female: 3,85235–39 years, male: 4,83635–39 years, female: 4,34530–34 years, male: 4,76630–34 years, female: 4,39925–29 years, male: 5,00525–29 years, female: 4,74120–24 years, male: 5,83420–24 years, female: 6,07015–19 years, male: 3,86415–19 years, female: 3,83610–14 years, male: 3,66010–14 years, female: 3,1405–9 years, male: 2,6295–9 years, female: 2,9150–4 years, male: 2,8820–4 years, female: 2,62885+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–42K2K4K4K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 1,207 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Missoula County Income

$75,598median household income

Median household income

$75,598

Half of households earn more, half earn less

Median earnings

$48,665

Typical yearly pay for a worker 25 or older.

Poverty rate

10.1%

About 1 in 10 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Missoula County Marital Status

45% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married45%46%44%
Never married38%41%36%
Divorced12%10%14%
Widowed4%3%6%
Separated<1%<1%1%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201

Sources

8 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year