Demographics of Thomas County, Kansas

Thomas County, Kansas had 7,725 people on July 1, 2025, by the Census Bureau’s estimate: −201 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.

Thomas County, in four figures

7,725
Population: July 1, 2025, Vintage 2025 estimate.; −2.5%
Change since July 2020: −201 people.; 35.3 ±2.1
Median age: ACS 2020–⁠2024.; $71,325 ±$9,792
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.

Thomas County, Kansas's population shrank 2.5% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Thomas 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

Thomas County, Kansas's population shrank 2.5% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Thomas 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	7,926	100.0	100.0
2021	7,942	100.2	100.2
2022	7,870	99.3	100.7
2023	7,809	98.5	101.6
2024	7,752	97.8	102.5
2025	7,725	97.5	103.1

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Population of Thomas 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	7,926	+2	+10	0	−9
2021	7,942	+16	+39	+10	−34
2022	7,870	−72	+28	+7	−109
2023	7,809	−61	−1	+39	−100
2024	7,752	−57	+33	+30	−118
2025	7,725	−27	+38	+11	−75

Age, 2020–2024

The median age is 35.3 ±2.1: for men 33.0 ±1.2 and for women 36.9 ±3.6. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Thomas County by age, ACS 2020–2024
Age	People	Share	Kansas	United States
Under 5	500 ±52	6.3% ±0.7	6.0% ±<0.1	5.6% ±<0.1
5 to 17	1,442 ±237	18.3% ±3.0	17.8% ±0.1	16.3% ±<0.1
18 to 24	1,026 ±208	13.0% ±2.6	10.2% ±0.1	9.1% ±<0.1
25 to 44	1,821 ±206	23.1% ±2.6	25.8% ±0.1	26.9% ±<0.1
45 to 64	1,628 ±168	20.6% ±2.1	23.3% ±0.1	24.8% ±<0.1
65 and over	1,468 ±218	18.6% ±2.8	17.0% ±0.2	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $71,325 ±$9,792, and income per person $39,446 ±$4,575, 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 Thomas County by income, ACS 2020–2024
Household income	Households	Share	Kansas	United States
Under $25,000	544 ±190	17.3% ±6.0	13.9% ±0.3	14.6% ±<0.1
$25,000 to $49,999	451 ±149	14.4% ±4.7	18.9% ±0.3	16.7% ±<0.1
$50,000 to $74,999	648 ±175	20.6% ±5.5	17.7% ±0.3	15.5% ±<0.1
$75,000 to $99,999	494 ±136	15.7% ±4.3	13.5% ±0.3	12.6% ±<0.1
$100,000 to $149,999	606 ±172	19.3% ±5.4	17.7% ±0.3	17.5% ±<0.1
$150,000 to $199,999	68 to 224	2.2% to 7.1%	8.8% ±0.2	9.6% ±<0.1
$200,000 or more	250 ±89	8.0% ±2.8	9.6% ±0.2	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 Thomas County by age, ACS 2020–2024
Age	Below poverty	Rate	Kansas	United States
All ages	485 ±219	6.5% ±2.9	11.3% ±0.2	12.5% ±0.1
Under 18	52 to 230	2.8% to 11.8%	13.1% ±0.4	16.1% ±0.1
18 to 59	256 ±121	7.2% ±3.4	11.5% ±0.2	11.6% ±0.1
60 and over	21 to 155	1.1% to 7.8%	9.0% ±0.3	11.0% ±<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%.

Housing, 2020–2024

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Housing in Thomas County, ACS 2020–2024
Measure	Thomas County	Kansas	United States
Housing units	3,575 ±33	1,293,635 ±880	143,775,355 ±10,234
Occupied	87.8% ±4.4	90.8% ±0.3	89.9% ±0.1
Vacant	12.2% ±4.4	9.2% ±0.3	10.1% ±0.1
Owner occupied	75.2% ±3.0	67.2% ±0.4	65.2% ±0.3
Renter occupied	24.8% ±4.5	32.8% ±0.3	34.8% ±0.1
Median home value	$172,700 ±$16,455	$217,200 ±$1,343	$332,700 ±$236
Median gross rent	$752 ±$90	$1,060 ±$7	$1,413 ±$2
Median year built	1967 ±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 Thomas County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Kansas	United States
Hispanic or Latino	662 ±0	8.4% ±<0.1	13.6% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	6,830 ±109	86.6% ±1.4	72.7% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	0 to 65	0% to 0.8%	5.2% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	0 to 30	0% to 0.4%	2.9% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	0 to 4	0% to 0.1%	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 40	0% to 0.5%	0.4% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	333 ±106	4.2% ±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 Thomas County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Kansas	United States
Born in the state	5,704 ±317	72.3% ±4.0	59.2% ±0.3	57.3% ±<0.1
Born in another state	1,836 ±307	23.3% ±3.9	32.4% ±0.2	26.9% ±<0.1
Born a citizen outside the states	0 to 45	0% to 0.6%	1.1% ±<0.1	1.7% ±<0.1
Born abroad	327 ±120	4.1% ±1.5	7.4% ±0.1	14.1% ±<0.1
Naturalized citizens	3 to 75	< 0.1% to 1.0%	3.2% ±0.1	7.4% ±<0.1
Not citizens	288 ±123	3.7% ±1.6	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%.

Thomas County among the counties of Kansas

49th of 105 by population, July 2025. Every one is listed on the Kansas page.

Counties of Kansas near Thomas County in population, July 2025
County	July 2025	Change since 2020
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%
Russell County	6,581	−1.4%

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