Demographics of Silver Bow County, Montana

Silver Bow County, Montana had 36,118 people on July 1, 2025, by the Census Bureau’s estimate: +910 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.

Silver Bow County, in four figures

36,118
Population: July 1, 2025, Vintage 2025 estimate.; +2.6%
Change since July 2020: +910 people.; 40.5 ±0.8
Median age: ACS 2020–⁠2024.; $61,754 ±$3,962
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.

Silver Bow County, Montana's population grew 2.6% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Silver Bow 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).

U.S. Census Bureau — Census Bureau population estimates — counties and Puerto Rico municipios, with components of change

About this chart

The figures

Silver Bow County, Montana's population grew 2.6% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Silver Bow 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	35,208	100.0	100.0
2021	35,498	100.8	100.2
2022	35,822	101.7	100.7
2023	36,122	102.6	101.6
2024	36,091	102.5	102.5
2025	36,118	102.6	103.1

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Population of Silver Bow 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	35,208	+78	−10	+3	+83
2021	35,498	+290	−214	+71	+433
2022	35,822	+324	−206	+60	+448
2023	36,122	+300	−185	+12	+470
2024	36,091	−31	−154	+33	+93
2025	36,118	+27	−154	+20	+159

Age, 2020–2024

The median age is 40.5 ±0.8: for men 38.6 ±1.0 and for women 42.0 ±0.7. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Silver Bow County by age, ACS 2020–2024
Age	People	Share	Montana	United States
Under 5	1,817 ±125	5.1% ±0.3	5.2% ±<0.1	5.6% ±<0.1
5 to 17	5,410 ±391	15.1% ±1.1	15.8% ±0.2	16.3% ±<0.1
18 to 24	3,863 ±476	10.8% ±1.3	9.0% ±0.2	9.1% ±<0.1
25 to 44	8,835 ±421	24.7% ±1.2	25.8% ±0.2	26.9% ±<0.1
45 to 64	8,888 ±454	24.8% ±1.3	24.1% ±0.2	24.8% ±<0.1
65 and over	6,972 ±510	19.5% ±1.4	20.1% ±0.2	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $61,754 ±$3,962, and income per person $35,951 ±$2,695, 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 Silver Bow County by income, ACS 2020–2024
Household income	Households	Share	Montana	United States
Under $25,000	3,150 ±491	20.4% ±3.2	15.0% ±0.4	14.6% ±<0.1
$25,000 to $49,999	3,220 ±446	20.9% ±2.9	19.4% ±0.5	16.7% ±<0.1
$50,000 to $74,999	3,136 ±449	20.3% ±2.9	17.3% ±0.4	15.5% ±<0.1
$75,000 to $99,999	2,015 ±296	13.1% ±1.9	13.6% ±0.4	12.6% ±<0.1
$100,000 to $149,999	2,341 ±350	15.2% ±2.3	17.4% ±0.4	17.5% ±<0.1
$150,000 to $199,999	843 ±157	5.5% ±1.0	8.2% ±0.3	9.6% ±<0.1
$200,000 or more	714 ±179	4.6% ±1.2	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 Silver Bow County by age, ACS 2020–2024
Age	Below poverty	Rate	Montana	United States
All ages	5,164 ±731	14.8% ±2.1	11.5% ±0.3	12.5% ±0.1
Under 18	1,076 ±264	15.2% ±3.6	12.7% ±0.6	16.1% ±0.1
18 to 59	2,965 ±506	16.2% ±2.7	11.7% ±0.4	11.6% ±0.1
60 and over	1,123 ±280	12.0% ±2.9	10.3% ±0.4	11.0% ±<0.1

Housing, 2020–2024

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Housing in Silver Bow County, ACS 2020–2024
Measure	Silver Bow County	Montana	United States
Housing units	17,499 ±52	528,419 ±3,257	143,775,355 ±10,234
Occupied	88.1% ±1.7	86.8% ±0.5	89.9% ±0.1
Vacant	11.9% ±1.7	13.2% ±0.3	10.1% ±0.1
Owner occupied	70.8% ±2.3	69.2% ±0.6	65.2% ±0.3
Renter occupied	29.2% ±2.7	30.8% ±0.4	34.8% ±0.1
Median home value	$255,200 ±$14,456	$375,800 ±$3,433	$332,700 ±$236
Median gross rent	$863 ±$78	$1,081 ±$14	$1,413 ±$2
Median year built	1956 ±3	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 Silver Bow County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Montana	United States
Hispanic or Latino	1,654 ±0	4.6% ±<0.1	4.6% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	31,899 ±163	89.1% ±0.5	83.6% ±0.2	57.4% ±<0.1
Black alone, not Hispanic	0 to 42	0% to 0.1%	0.4% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	45 to 237	0.1% to 0.7%	0.8% ±0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	496 ±212	1.4% ±0.6	5.3% ±0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 9	0% to < 0.1%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	18 to 122	0.1% to 0.3%	0.5% ±0.1	0.6% ±<0.1
Two or more races, not Hispanic	1,503 ±274	4.2% ±0.8	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 Silver Bow County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Montana	United States
Born in the state	24,891 ±699	69.6% ±2.0	52.1% ±0.5	57.3% ±<0.1
Born in another state	10,317 ±711	28.8% ±2.0	44.8% ±0.4	26.9% ±<0.1
Born a citizen outside the states	56 to 220	0.2% to 0.6%	0.8% ±0.1	1.7% ±<0.1
Born abroad	439 ±112	1.2% ±0.3	2.3% ±0.1	14.1% ±<0.1
Naturalized citizens	239 ±115	0.7% ±0.3	1.2% ±0.1	7.4% ±<0.1
Not citizens	89 to 311	0.2% to 0.9%	1.1% ±0.1	6.8% ±<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%.

Silver Bow County among the counties of Montana

8th of 56 by population, July 2025. Every one is listed on the Montana page.

Counties of Montana near Silver Bow County in population, July 2025
County	July 2025	Change since 2020
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%
Lake County	33,392	+6.9%
Lincoln County	22,328	+13.1%
Park County	18,214	+5.7%
Hill County	16,167	−0.5%
Sanders County	14,062	+12.9%

Elsewhere on the site

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

Data retrieved September 25, 2026