Demographics of Missoula County, Montana

Missoula County, Montana had 123,513 people on July 1, 2025, by the Census Bureau’s estimate: +5,176 since July 2020. Age, income, poverty, housing and origin below come from the American Community Survey, averaged over 2020–2024, each with its margin of error.

Missoula County, in four figures

123,513
Population: July 1, 2025, Vintage 2025 estimate.; +4.4%
Change since July 2020: +5,176 people.; 37.1 ±0.3
Median age: ACS 2020–⁠2024.; $75,598 ±$2,922
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. Each year's change is births less deaths, net moves from abroad and net moves from elsewhere in the country, with the Bureau's small residual. The 2020 row's components run 3 months, from the April census to July 1.

Missoula County, Montana's population grew 4.4% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Missoula County, Montana's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).

Source: The Census Bureau

About this chart

The figures

Missoula County, Montana's population grew 4.4% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Missoula County, Montana's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
July 1	Population	Index	United States
2020	118,337	100.0	100.0
2021	119,874	101.3	100.2
2022	120,859	102.1	100.7
2023	121,504	102.7	101.6
2024	122,471	103.5	102.5
2025	123,513	104.4	103.1

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Population of Missoula County, Montana on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	118,337	+410	+55	+12	+342
2021	119,874	+1,537	+91	+81	+1,360
2022	120,859	+985	−10	+108	+873
2023	121,504	+645	+49	+60	+541
2024	122,471	+967	+65	+305	+598
2025	123,513	+1,042	+110	+164	+765

Age, 2020–2024

The median age is 37.1 ±0.3: for men 36.6 ±0.4 and for women 37.8 ±0.5. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Missoula County by age, ACS 2020–2024
Age	People	Share	Montana	United States
Under 5	5,510 ±238	4.6% ±0.2	5.2% ±<0.1	5.6% ±<0.1
5 to 17	16,427 ±620	13.6% ±0.5	15.8% ±0.2	16.3% ±<0.1
18 to 24	15,521 ±762	12.9% ±0.6	9.0% ±0.2	9.1% ±<0.1
25 to 44	35,969 ±916	29.8% ±0.8	25.8% ±0.2	26.9% ±<0.1
45 to 64	26,562 ±792	22.0% ±0.7	24.1% ±0.2	24.8% ±<0.1
65 and over	20,683 ±835	17.1% ±0.7	20.1% ±0.2	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $75,598 ±$2,922, and income per person $45,868 ±$1,646, in 2024 dollars. The median is $72,509 ±$761 in Montana and $80,734 ±$166 in the United States.

Households by income

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Households in Missoula County by income, ACS 2020–2024
Household income	Households	Share	Montana	United States
Under $25,000	7,702 ±737	14.6% ±1.4	15.0% ±0.4	14.6% ±<0.1
$25,000 to $49,999	9,884 ±764	18.8% ±1.4	19.4% ±0.5	16.7% ±<0.1
$50,000 to $74,999	8,588 ±638	16.3% ±1.2	17.3% ±0.4	15.5% ±<0.1
$75,000 to $99,999	7,324 ±583	13.9% ±1.1	13.6% ±0.4	12.6% ±<0.1
$100,000 to $149,999	9,396 ±771	17.8% ±1.4	17.4% ±0.4	17.5% ±<0.1
$150,000 to $199,999	4,438 ±424	8.4% ±0.8	8.2% ±0.3	9.6% ±<0.1
$200,000 or more	5,347 ±581	10.2% ±1.1	9.0% ±0.3	13.4% ±0.1

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

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Poverty rate in Missoula County by age, ACS 2020–2024
Age	Below poverty	Rate	Montana	United States
All ages	11,952 ±1,281	10.1% ±1.1	11.5% ±0.3	12.5% ±0.1
Under 18	1,637 ±382	7.5% ±1.7	12.7% ±0.6	16.1% ±0.1
18 to 59	8,036 ±900	11.6% ±1.3	11.7% ±0.4	11.6% ±0.1
60 and over	2,279 ±355	8.3% ±1.3	10.3% ±0.4	11.0% ±<0.1

Housing, 2020–2024

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Housing in Missoula County, ACS 2020–2024
Measure	Missoula County	Montana	United States
Housing units	56,930 ±65	528,419 ±3,257	143,775,355 ±10,234
Occupied	92.5% ±1.1	86.8% ±0.5	89.9% ±0.1
Vacant	7.5% ±1.1	13.2% ±0.3	10.1% ±0.1
Owner occupied	58.8% ±1.7	69.2% ±0.6	65.2% ±0.3
Renter occupied	41.2% ±1.6	30.8% ±0.4	34.8% ±0.1
Median home value	$472,100 ±$10,711	$375,800 ±$3,433	$332,700 ±$236
Median gross rent	$1,190 ±$32	$1,081 ±$14	$1,413 ±$2
Median year built	1985 ±2	1981 ±1	1980 ±1

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

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People in Missoula County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Montana	United States
Hispanic or Latino	6,096 ±0	5.1% ±<0.1	4.6% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	103,132 ±601	85.5% ±0.5	83.6% ±0.2	57.4% ±<0.1
Black alone, not Hispanic	513 ±135	0.4% ±0.1	0.4% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	1,876 ±239	1.6% ±0.2	0.8% ±0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	2,255 ±476	1.9% ±0.4	5.3% ±0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	80 ±35	0.1% ±<0.1	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	301 to 1,095	0.2% to 0.9%	0.5% ±0.1	0.6% ±<0.1
Two or more races, not Hispanic	6,022 ±683	5.0% ±0.6	4.7% ±0.2	4.3% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

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People in Missoula County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Montana	United States
Born in the state	55,925 ±1,569	46.3% ±1.3	52.1% ±0.5	57.3% ±<0.1
Born in another state	60,129 ±1,616	49.8% ±1.3	44.8% ±0.4	26.9% ±<0.1
Born a citizen outside the states	1,145 ±252	0.9% ±0.2	0.8% ±0.1	1.7% ±<0.1
Born abroad	3,473 ±539	2.9% ±0.4	2.3% ±0.1	14.1% ±<0.1
Naturalized citizens	1,858 ±372	1.5% ±0.3	1.2% ±0.1	7.4% ±<0.1
Not citizens	1,615 ±406	1.3% ±0.3	1.1% ±0.1	6.8% ±<0.1

Missoula County among the counties of Montana

3rd of 56 by population, July 2025. Every one is listed on the Montana page.

Counties of Montana near Missoula County in population, July 2025
County	July 2025	Change since 2020
Yellowstone County	172,692	+4.5%
Gallatin County	128,740	+7.6%
Missoula County	123,513	+4.4%
Flathead County	115,429	+10.1%
Cascade County	85,029	+0.7%
Lewis and Clark County	75,331	+5.8%
Ravalli County	48,582	+9.4%
Silver Bow County	36,118	+2.6%

Elsewhere on the site

Rankings this appears in

No. 3 Counties by population in Montana
No. 24 Counties by population growth in Montana

Sources

Census Bureau population estimates — counties and Puerto Rico municipios, with components of change — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Compiled automatically from Census Bureau population estimates — counties and Puerto Rico municipios, with components of change and American Community Survey 5-year estimates — table-based Summary File by a checked SQL query · Editor: Kian O'Connor · How this site is built

Data retrieved September 25, 2026