Demographics of Clark County, Missouri

Clark County, Missouri had 6,475 people on July 1, 2025, by the Census Bureau’s estimate: −189 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.

Clark County, in four figures

6,475
Population: July 1, 2025, Vintage 2025 estimate.; −2.8%
Change since July 2020: −189 people.; 43.5 ±1.1
Median age: ACS 2020–⁠2024.; $51,781 ±$3,325
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.

Clark County, Missouri's population shrank 2.8% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Clark 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

Clark County, Missouri's population shrank 2.8% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Clark 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	6,664	100.0	100.0
2021	6,746	101.2	100.2
2022	6,728	101.0	100.7
2023	6,642	99.7	101.6
2024	6,584	98.8	102.5
2025	6,475	97.2	103.1

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Population of Clark 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	6,664	+22	+15	0	+6
2021	6,746	+82	−21	0	+103
2022	6,728	−18	−23	0	+9
2023	6,642	−86	−20	−1	−64
2024	6,584	−58	−26	+2	−32
2025	6,475	−109	−15	+1	−94

Age, 2020–2024

The median age is 43.5 ±1.1: for men 43.0 ±1.1 and for women 43.8 ±1.4. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Clark County by age, ACS 2020–2024
Age	People	Share	Missouri	United States
Under 5	405 ±30	6.1% ±0.5	5.8% ±<0.1	5.6% ±<0.1
5 to 17	1,190 ±112	17.8% ±1.7	16.6% ±0.1	16.3% ±<0.1
18 to 24	422 ±86	6.3% ±1.3	9.1% ±0.1	9.1% ±<0.1
25 to 44	1,425 ±129	21.3% ±1.9	26.0% ±0.1	26.9% ±<0.1
45 to 64	1,782 ±122	26.7% ±1.8	24.6% ±0.1	24.8% ±<0.1
65 and over	1,451 ±173	21.7% ±2.6	17.9% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $51,781 ±$3,325, and income per person $28,391 ±$2,719, 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 Clark County by income, ACS 2020–2024
Household income	Households	Share	Missouri	United States
Under $25,000	540 ±117	22.3% ±4.7	15.8% ±0.2	14.6% ±<0.1
$25,000 to $49,999	586 ±118	24.2% ±4.8	19.6% ±0.2	16.7% ±<0.1
$50,000 to $74,999	466 ±112	19.2% ±4.5	17.4% ±0.2	15.5% ±<0.1
$75,000 to $99,999	330 ±86	13.6% ±3.5	13.2% ±0.2	12.6% ±<0.1
$100,000 to $149,999	292 ±74	12.1% ±3.0	17.1% ±0.2	17.5% ±<0.1
$150,000 to $199,999	100 ±42	4.1% ±1.7	8.2% ±0.1	9.6% ±<0.1
$200,000 or more	51 to 167	2.1% to 6.9%	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 Clark County by age, ACS 2020–2024
Age	Below poverty	Rate	Missouri	United States
All ages	731 ±159	11.2% ±2.4	12.6% ±0.2	12.5% ±0.1
Under 18	236 ±78	14.9% ±4.8	15.8% ±0.4	16.1% ±0.1
18 to 59	285 ±78	9.1% ±2.5	12.0% ±0.2	11.6% ±0.1
60 and over	210 ±72	11.5% ±3.8	10.9% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Clark County, ACS 2020–2024
Measure	Clark County	Missouri	United States
Housing units	3,233 ±24	2,825,287 ±1,043	143,775,355 ±10,234
Occupied	74.9% ±3.1	88.8% ±0.2	89.9% ±0.1
Vacant	25.1% ±3.2	11.2% ±0.2	10.1% ±0.1
Owner occupied	78.3% ±4.4	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	$130,700 ±$21,302	$230,300 ±$880	$332,700 ±$236
Median gross rent	$612 ±$97	$1,033 ±$6	$1,413 ±$2
Median year built	1970 ±3	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 Clark County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Missouri	United States
Hispanic or Latino	65 ±0	1.0% ±<0.1	5.2% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	6,334 ±75	94.9% ±1.1	76.3% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	127 ±12	1.9% ±0.2	10.9% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	0 to 18	0% to 0.3%	2.1% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	0 to 17	0% to 0.3%	0.2% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 17	0% to 0.3%	0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 17	0% to 0.3%	0.4% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	68 to 218	1.0% to 3.3%	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 Clark County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Missouri	United States
Born in the state	2,362 ±310	35.4% ±4.6	65.6% ±0.2	57.3% ±<0.1
Born in another state	4,294 ±309	64.3% ±4.6	29.1% ±0.1	26.9% ±<0.1
Born a citizen outside the states	0 to 5	0% to 0.1%	0.8% ±<0.1	1.7% ±<0.1
Born abroad	3 to 31	< 0.1% to 0.5%	4.5% ±0.1	14.1% ±<0.1
Naturalized citizens	0 to 23	0% to 0.3%	2.3% ±0.1	7.4% ±<0.1
Not citizens	0 to 14	0% to 0.2%	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%.

Clark County among the counties of Missouri

102nd of 115 by population, July 2025. Every one is listed on the Missouri page.

Counties of Missouri near Clark County in population, July 2025
County	July 2025	Change since 2020
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%
Gentry County	6,384	+4.2%
Reynolds County	5,992	−1.4%
Shelby County	5,870	−3.6%
Sullivan County	5,738	−4.1%
Carter County	5,418	+4.2%

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