Demographics of Clay County, Kansas

Clay County, Kansas had 7,990 people on July 1, 2025, by the Census Bureau’s estimate: −136 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.

Clay County, in four figures

7,990
Population: July 1, 2025, Vintage 2025 estimate.; −1.7%
Change since July 2020: −136 people.; 43.7 ±0.6
Median age: ACS 2020–⁠2024.; $66,176 ±$5,320
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.

Clay County, Kansas's population shrank 1.7% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Clay County, Kansas'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

Clay County, Kansas's population shrank 1.7% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Clay County, Kansas'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	8,126	100.0	100.0
2021	8,099	99.7	100.2
2022	8,045	99.0	100.7
2023	8,003	98.5	101.6
2024	8,014	98.6	102.5
2025	7,990	98.3	103.1

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Population of Clay County, Kansas on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	8,126	+11	−1	0	+10
2021	8,099	−27	−34	0	0
2022	8,045	−54	−41	0	−8
2023	8,003	−42	−35	0	−5
2024	8,014	+11	−29	+17	+22
2025	7,990	−24	−30	+12	−6

Age, 2020–2024

The median age is 43.7 ±0.6: for men 43.2 ±0.9 and for women 45.1 ±0.7. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Clay County by age, ACS 2020–2024
Age	People	Share	Kansas	United States
Under 5	446 ±31	5.5% ±0.4	6.0% ±<0.1	5.6% ±<0.1
5 to 17	1,407 ±138	17.5% ±1.7	17.8% ±0.1	16.3% ±<0.1
18 to 24	504 ±100	6.3% ±1.2	10.2% ±0.1	9.1% ±<0.1
25 to 44	1,784 ±138	22.2% ±1.7	25.8% ±0.1	26.9% ±<0.1
45 to 64	1,961 ±157	24.4% ±2.0	23.3% ±0.1	24.8% ±<0.1
65 and over	1,946 ±197	24.2% ±2.4	17.0% ±0.2	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $66,176 ±$5,320, and income per person $37,854 ±$2,459, in 2024 dollars. The median is $74,275 ±$475 in Kansas and $80,734 ±$166 in the United States.

Households by income

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Households in Clay County by income, ACS 2020–2024
Household income	Households	Share	Kansas	United States
Under $25,000	663 ±150	18.8% ±4.2	13.9% ±0.3	14.6% ±<0.1
$25,000 to $49,999	525 ±139	14.9% ±3.9	18.9% ±0.3	16.7% ±<0.1
$50,000 to $74,999	903 ±189	25.6% ±5.3	17.7% ±0.3	15.5% ±<0.1
$75,000 to $99,999	313 ±86	8.9% ±2.4	13.5% ±0.3	12.6% ±<0.1
$100,000 to $149,999	724 ±149	20.6% ±4.2	17.7% ±0.3	17.5% ±<0.1
$150,000 to $199,999	160 ±66	4.5% ±1.9	8.8% ±0.2	9.6% ±<0.1
$200,000 or more	234 ±71	6.6% ±2.0	9.6% ±0.2	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 Clay County by age, ACS 2020–2024
Age	Below poverty	Rate	Kansas	United States
All ages	1,047 ±250	13.4% ±3.2	11.3% ±0.2	12.5% ±0.1
Under 18	352 ±114	19.1% ±5.8	13.1% ±0.4	16.1% ±0.1
18 to 59	436 ±118	11.9% ±3.2	11.5% ±0.2	11.6% ±0.1
60 and over	259 ±108	11.1% ±4.5	9.0% ±0.3	11.0% ±<0.1

Housing, 2020–2024

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Housing in Clay County, ACS 2020–2024
Measure	Clay County	Kansas	United States
Housing units	3,944 ±23	1,293,635 ±880	143,775,355 ±10,234
Occupied	89.3% ±3.4	90.8% ±0.3	89.9% ±0.1
Vacant	10.7% ±3.4	9.2% ±0.3	10.1% ±0.1
Owner occupied	78.0% ±4.3	67.2% ±0.4	65.2% ±0.3
Renter occupied	22.0% ±4.6	32.8% ±0.3	34.8% ±0.1
Median home value	$155,900 ±$9,749	$217,200 ±$1,343	$332,700 ±$236
Median gross rent	$937 ±$87	$1,060 ±$7	$1,413 ±$2
Median year built	1962 ±5	1976 ±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 Clay County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Kansas	United States
Hispanic or Latino	284 ±0	3.5% ±<0.1	13.6% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	7,247 ±95	90.0% ±1.2	72.7% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	193 ±14	2.4% ±0.2	5.2% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	45 ±20	0.6% ±0.2	2.9% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	3 to 73	< 0.1% to 0.9%	0.4% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 16	0% to 0.2%	0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 8	0% to 0.1%	0.4% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	238 ±104	3.0% ±1.3	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 Clay County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Kansas	United States
Born in the state	5,915 ±265	73.5% ±3.3	59.2% ±0.3	57.3% ±<0.1
Born in another state	1,981 ±273	24.6% ±3.4	32.4% ±0.2	26.9% ±<0.1
Born a citizen outside the states	36 to 120	0.4% to 1.5%	1.1% ±<0.1	1.7% ±<0.1
Born abroad	33 to 115	0.4% to 1.4%	7.4% ±0.1	14.1% ±<0.1
Naturalized citizens	5 to 27	0.1% to 0.3%	3.2% ±0.1	7.4% ±<0.1
Not citizens	15 to 101	0.2% to 1.3%	4.2% ±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%.

Clay County among the counties of Kansas

48th of 105 by population, July 2025. Every one is listed on the Kansas page.

Counties of Kansas near Clay County in population, July 2025
County	July 2025	Change since 2020
Brown County	9,104	−4.0%
Cloud County	8,833	−2.0%
Coffey County	8,467	+1.3%
Wilson County	8,299	−3.3%
Anderson County	8,018	+2.3%
Clay County	7,990	−1.7%
Thomas County	7,725	−2.5%
Doniphan County	7,594	+1.6%
Kingman County	7,029	−5.4%
Grant County	7,028	−4.1%
Wabaunsee County	7,018	+1.8%

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