Demographics of Maries County, Missouri

Maries County, Missouri had 8,397 people on July 1, 2025, by the Census Bureau’s estimate: −58 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.

Maries County, in four figures

8,397
Population: July 1, 2025, Vintage 2025 estimate.; −0.7%
Change since July 2020: −58 people.; 44.9 ±0.3
Median age: ACS 2020–⁠2024.; $59,455 ±$10,375
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.

Maries County, Missouri's population shrank 0.7% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Maries County, Missouri'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

Maries County, Missouri's population shrank 0.7% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Maries County, Missouri'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	8,455	100.0	100.0
2021	8,426	99.7	100.2
2022	8,441	99.8	100.7
2023	8,452	100.0	101.6
2024	8,494	100.5	102.5
2025	8,397	99.3	103.1

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Population of Maries County, Missouri on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	8,455	+24	+5	0	+20
2021	8,426	−29	−56	+5	+15
2022	8,441	+15	−34	+6	+46
2023	8,452	+11	−21	+6	+27
2024	8,494	+42	−34	0	+77
2025	8,397	−97	−34	−1	−60

Age, 2020–2024

The median age is 44.9 ±0.3: for men 44.4 ±0.9 and for women 46.4 ±1.7. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Maries County by age, ACS 2020–2024
Age	People	Share	Missouri	United States
Under 5	444 ±26	5.3% ±0.3	5.8% ±<0.1	5.6% ±<0.1
5 to 17	1,293 ±180	15.3% ±2.1	16.6% ±0.1	16.3% ±<0.1
18 to 24	628 ±154	7.4% ±1.8	9.1% ±0.1	9.1% ±<0.1
25 to 44	1,867 ±159	22.1% ±1.9	26.0% ±0.1	26.9% ±<0.1
45 to 64	2,356 ±180	27.9% ±2.1	24.6% ±0.1	24.8% ±<0.1
65 and over	1,862 ±200	22.0% ±2.4	17.9% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $59,455 ±$10,375, and income per person $31,243 ±$2,189, in 2024 dollars. The median is $70,702 ±$325 in Missouri and $80,734 ±$166 in the United States.

Households by income

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Households in Maries County by income, ACS 2020–2024
Household income	Households	Share	Missouri	United States
Under $25,000	604 ±137	17.6% ±3.9	15.8% ±0.2	14.6% ±<0.1
$25,000 to $49,999	875 ±188	25.5% ±5.3	19.6% ±0.2	16.7% ±<0.1
$50,000 to $74,999	566 ±132	16.5% ±3.7	17.4% ±0.2	15.5% ±<0.1
$75,000 to $99,999	539 ±150	15.7% ±4.3	13.2% ±0.2	12.6% ±<0.1
$100,000 to $149,999	502 ±126	14.6% ±3.6	17.1% ±0.2	17.5% ±<0.1
$150,000 to $199,999	76 to 242	2.2% to 7.0%	8.2% ±0.1	9.6% ±<0.1
$200,000 or more	183 ±76	5.3% ±2.2	8.7% ±0.1	13.4% ±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%.

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 Maries County by age, ACS 2020–2024
Age	Below poverty	Rate	Missouri	United States
All ages	1,133 ±304	13.5% ±3.6	12.6% ±0.2	12.5% ±0.1
Under 18	226 ±94	13.0% ±5.3	15.8% ±0.4	16.1% ±0.1
18 to 59	585 ±228	14.5% ±5.5	12.0% ±0.2	11.6% ±0.1
60 and over	322 ±108	12.3% ±4.0	10.9% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Maries County, ACS 2020–2024
Measure	Maries County	Missouri	United States
Housing units	4,261 ±21	2,825,287 ±1,043	143,775,355 ±10,234
Occupied	80.5% ±4.6	88.8% ±0.2	89.9% ±0.1
Vacant	19.5% ±4.5	11.2% ±0.2	10.1% ±0.1
Owner occupied	78.3% ±3.1	68.1% ±0.3	65.2% ±0.3
Renter occupied	21.7% ±5.3	31.9% ±0.2	34.8% ±0.1
Median home value	$219,100 ±$30,356	$230,300 ±$880	$332,700 ±$236
Median gross rent	$590 ±$37	$1,033 ±$6	$1,413 ±$2
Median year built	1985 ±4	1978 ±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 Maries County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Missouri	United States
Hispanic or Latino	175 ±0	2.1% ±<0.1	5.2% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	7,746 ±119	91.7% ±1.4	76.3% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	0 to 40	0% to 0.5%	10.9% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	0 to 17	0% to 0.2%	2.1% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	40 to 166	0.5% to 2.0%	0.2% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 17	0% to 0.2%	0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 11	0% to 0.1%	0.4% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	404 ±135	4.8% ±1.6	4.8% ±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 Maries County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Missouri	United States
Born in the state	6,617 ±269	78.3% ±3.2	65.6% ±0.2	57.3% ±<0.1
Born in another state	1,703 ±249	20.2% ±2.9	29.1% ±0.1	26.9% ±<0.1
Born a citizen outside the states	20 to 136	0.2% to 1.6%	0.8% ±<0.1	1.7% ±<0.1
Born abroad	13 to 91	0.2% to 1.1%	4.5% ±0.1	14.1% ±<0.1
Naturalized citizens	2 to 78	< 0.1% to 0.9%	2.3% ±0.1	7.4% ±<0.1
Not citizens	0 to 24	0% to 0.3%	2.2% ±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%.

Maries County among the counties of Missouri

97th of 115 by population, July 2025. Every one is listed on the Missouri page.

Counties of Missouri near Maries County in population, July 2025
County	July 2025	Change since 2020
Caldwell County	9,012	+2.1%
Monroe County	8,959	+3.1%
Oregon County	8,709	+1.2%
Daviess County	8,558	+1.5%
Carroll County	8,417	−0.6%
Maries County	8,397	−0.7%
Harrison County	8,281	+1.5%
Dade County	7,804	+2.9%
Chariton County	7,377	−0.1%
Shannon County	7,285	+3.6%
Clark County	6,475	−2.8%

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