Demographics of Mahnomen County, Minnesota

Mahnomen County, Minnesota had 5,153 people on July 1, 2025, by the Census Bureau’s estimate: −220 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.

Mahnomen County, in four figures

5,153
Population: July 1, 2025, Vintage 2025 estimate.; −4.1%
Change since July 2020: −220 people.; 35.4 ±0.4
Median age: ACS 2020–⁠2024.; $59,441 ±$3,445
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.

Mahnomen County, Minnesota's population shrank 4.1% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Mahnomen County, Minnesota'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

Mahnomen County, Minnesota's population shrank 4.1% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Mahnomen County, Minnesota'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	5,373	100.0	100.0
2021	5,384	100.2	100.2
2022	5,320	99.0	100.7
2023	5,307	98.8	101.6
2024	5,241	97.5	102.5
2025	5,153	95.9	103.1

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Population of Mahnomen County, Minnesota on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	5,373	−29	−5	0	−24
2021	5,384	+11	−15	0	+22
2022	5,320	−64	−30	+8	−43
2023	5,307	−13	+18	+2	−32
2024	5,241	−66	−6	+6	−65
2025	5,153	−88	−4	+2	−87

Age, 2020–2024

The median age is 35.4 ±0.4: for men 34.3 ±0.7 and for women 36.2 ±0.4. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Mahnomen County by age, ACS 2020–2024
Age	People	Share	Minnesota	United States
Under 5	427 ±20	8.0% ±0.4	5.8% ±<0.1	5.6% ±<0.1
5 to 17	1,234 ±55	23.0% ±1.0	17.0% ±0.1	16.3% ±<0.1
18 to 24	448 ±38	8.4% ±0.7	8.8% ±0.1	9.1% ±<0.1
25 to 44	1,104 ±40	20.6% ±0.7	26.6% ±0.1	26.9% ±<0.1
45 to 64	1,188 ±40	22.2% ±0.7	24.5% ±0.1	24.8% ±<0.1
65 and over	957 ±43	17.9% ±0.8	17.3% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $59,441 ±$3,445, and income per person $27,297 ±$1,214, in 2024 dollars. The median is $89,062 ±$409 in Minnesota and $80,734 ±$166 in the United States.

Households by income

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Households in Mahnomen County by income, ACS 2020–2024
Household income	Households	Share	Minnesota	United States
Under $25,000	406 ±48	21.5% ±2.5	11.7% ±0.2	14.6% ±<0.1
$25,000 to $49,999	404 ±52	21.4% ±2.7	14.9% ±0.2	16.7% ±<0.1
$50,000 to $74,999	351 ±46	18.6% ±2.4	15.6% ±0.2	15.5% ±<0.1
$75,000 to $99,999	216 ±28	11.5% ±1.5	13.2% ±0.1	12.6% ±<0.1
$100,000 to $149,999	302 ±42	16.0% ±2.2	19.6% ±0.2	17.5% ±<0.1
$150,000 to $199,999	127 ±24	6.7% ±1.3	11.2% ±0.2	9.6% ±<0.1
$200,000 or more	79 ±19	4.2% ±1.0	13.8% ±0.1	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 Mahnomen County by age, ACS 2020–2024
Age	Below poverty	Rate	Minnesota	United States
All ages	961 ±104	18.3% ±2.0	9.3% ±0.2	12.5% ±0.1
Under 18	361 ±56	22.9% ±3.3	10.3% ±0.3	16.1% ±0.1
18 to 59	417 ±46	17.7% ±1.9	9.1% ±0.2	11.6% ±0.1
60 and over	183 ±27	14.0% ±2.0	8.7% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Mahnomen County, ACS 2020–2024
Measure	Mahnomen County	Minnesota	United States
Housing units	2,547 ±28	2,545,030 ±1,535	143,775,355 ±10,234
Occupied	74.0% ±1.5	90.7% ±0.2	89.9% ±0.1
Vacant	26.0% ±1.1	9.3% ±0.2	10.1% ±0.1
Owner occupied	73.3% ±1.3	72.2% ±0.3	65.2% ±0.3
Renter occupied	26.7% ±2.3	27.8% ±0.2	34.8% ±0.1
Median home value	$161,900 ±$5,793	$329,300 ±$903	$332,700 ±$236
Median gross rent	$696 ±$67	$1,280 ±$7	$1,413 ±$2
Median year built	1975 ±2	1979 ±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 Mahnomen County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Minnesota	United States
Hispanic or Latino	218 ±0	4.1% ±<0.1	6.4% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	2,380 ±18	44.4% ±0.3	75.9% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	0 to 11	0% to 0.2%	6.9% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	25 ±8	0.5% ±0.1	5.1% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	1,802 ±81	33.6% ±1.5	0.7% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 9	0% to 0.2%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	10 to 44	0.2% to 0.8%	0.5% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	897 ±81	16.7% ±1.5	4.5% ±0.1	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 Mahnomen County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Minnesota	United States
Born in the state	4,350 ±69	81.2% ±1.3	67.1% ±0.2	57.3% ±<0.1
Born in another state	945 ±68	17.6% ±1.3	23.4% ±0.1	26.9% ±<0.1
Born a citizen outside the states	2 to 12	< 0.1% to 0.2%	0.9% ±<0.1	1.7% ±<0.1
Born abroad	56 ±19	1.0% ±0.4	8.7% ±0.1	14.1% ±<0.1
Naturalized citizens	37 ±15	0.7% ±0.3	5.1% ±0.1	7.4% ±<0.1
Not citizens	8 to 30	0.1% to 0.6%	3.6% ±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%.

Mahnomen County among the counties of Minnesota

82nd of 87 by population, July 2025. Every one is listed on the Minnesota page.

Counties of Minnesota near Mahnomen County in population, July 2025
County	July 2025	Change since 2020
Norman County	6,336	−1.6%
Wilkin County	6,288	−2.9%
Grant County	6,085	−0.1%
Lincoln County	5,583	−0.7%
Cook County	5,522	−1.4%
Mahnomen County	5,153	−4.1%
Big Stone County	5,054	−2.0%
Kittson County	4,031	−3.7%
Red Lake County	3,940	+0.1%
Lake of the Woods County	3,770	0%
Traverse County	3,130	−6.8%

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