Demographics of Sumner County, Kansas

Sumner County, Kansas had 22,312 people on July 1, 2025, by the Census Bureau’s estimate: −29 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.

Sumner County, in four figures

22,312
Population: July 1, 2025, Vintage 2025 estimate.; −0.1%
Change since July 2020: −29 people.; 41.3 ±0.6
Median age: ACS 2020–⁠2024.; $63,951 ±$4,642
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.

Sumner County, Kansas's population shrank 0.1% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Sumner 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

Sumner County, Kansas's population shrank 0.1% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Sumner 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	22,341	100.0	100.0
2021	22,348	100.0	100.2
2022	22,396	100.2	100.7
2023	22,404	100.3	101.6
2024	22,372	100.1	102.5
2025	22,312	99.9	103.1

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Population of Sumner 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	22,341	−47	−5	0	−41
2021	22,348	+7	−115	−1	+104
2022	22,396	+48	−92	−3	+152
2023	22,404	+8	−55	+3	+67
2024	22,372	−32	−42	+13	0
2025	22,312	−60	−41	+3	−22

Age, 2020–2024

The median age is 41.3 ±0.6: for men 40.2 ±1.8 and for women 41.7 ±0.4. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Sumner County by age, ACS 2020–2024
Age	People	Share	Kansas	United States
Under 5	1,272 ±50	5.7% ±0.2	6.0% ±<0.1	5.6% ±<0.1
5 to 17	4,111 ±282	18.4% ±1.3	17.8% ±0.1	16.3% ±<0.1
18 to 24	1,794 ±200	8.0% ±0.9	10.2% ±0.1	9.1% ±<0.1
25 to 44	5,058 ±288	22.6% ±1.3	25.8% ±0.1	26.9% ±<0.1
45 to 64	5,751 ±291	25.7% ±1.3	23.3% ±0.1	24.8% ±<0.1
65 and over	4,367 ±300	19.5% ±1.3	17.0% ±0.2	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $63,951 ±$4,642, and income per person $34,307 ±$1,719, 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 Sumner County by income, ACS 2020–2024
Household income	Households	Share	Kansas	United States
Under $25,000	1,484 ±262	16.5% ±2.9	13.9% ±0.3	14.6% ±<0.1
$25,000 to $49,999	1,882 ±258	21.0% ±2.8	18.9% ±0.3	16.7% ±<0.1
$50,000 to $74,999	1,768 ±268	19.7% ±3.0	17.7% ±0.3	15.5% ±<0.1
$75,000 to $99,999	964 ±131	10.7% ±1.4	13.5% ±0.3	12.6% ±<0.1
$100,000 to $149,999	1,694 ±254	18.9% ±2.8	17.7% ±0.3	17.5% ±<0.1
$150,000 to $199,999	720 ±162	8.0% ±1.8	8.8% ±0.2	9.6% ±<0.1
$200,000 or more	458 ±141	5.1% ±1.6	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 Sumner County by age, ACS 2020–2024
Age	Below poverty	Rate	Kansas	United States
All ages	2,321 ±397	10.6% ±1.8	11.3% ±0.2	12.5% ±0.1
Under 18	623 ±174	12.0% ±3.3	13.1% ±0.4	16.1% ±0.1
18 to 59	1,178 ±210	11.0% ±1.9	11.5% ±0.2	11.6% ±0.1
60 and over	520 ±135	8.7% ±2.2	9.0% ±0.3	11.0% ±<0.1

Housing, 2020–2024

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Housing in Sumner County, ACS 2020–2024
Measure	Sumner County	Kansas	United States
Housing units	10,414 ±47	1,293,635 ±880	143,775,355 ±10,234
Occupied	86.1% ±1.9	90.8% ±0.3	89.9% ±0.1
Vacant	13.9% ±2.0	9.2% ±0.3	10.1% ±0.1
Owner occupied	75.1% ±3.2	67.2% ±0.4	65.2% ±0.3
Renter occupied	24.9% ±3.0	32.8% ±0.3	34.8% ±0.1
Median home value	$135,100 ±$14,398	$217,200 ±$1,343	$332,700 ±$236
Median gross rent	$825 ±$129	$1,060 ±$7	$1,413 ±$2
Median year built	1962 ±4	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 Sumner County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Kansas	United States
Hispanic or Latino	1,366 ±0	6.1% ±<0.1	13.6% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	19,335 ±161	86.5% ±0.7	72.7% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	246 ±61	1.1% ±0.3	5.2% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	41 to 129	0.2% to 0.6%	2.9% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	107 ±45	0.5% ±0.2	0.4% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 21	0% to 0.1%	0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	44 to 284	0.2% to 1.3%	0.4% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	1,050 ±144	4.7% ±0.6	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 Sumner County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Kansas	United States
Born in the state	16,592 ±531	74.2% ±2.4	59.2% ±0.3	57.3% ±<0.1
Born in another state	5,409 ±526	24.2% ±2.4	32.4% ±0.2	26.9% ±<0.1
Born a citizen outside the states	17 to 99	0.1% to 0.4%	1.1% ±<0.1	1.7% ±<0.1
Born abroad	294 ±92	1.3% ±0.4	7.4% ±0.1	14.1% ±<0.1
Naturalized citizens	64 to 242	0.3% to 1.1%	3.2% ±0.1	7.4% ±<0.1
Not citizens	60 to 222	0.3% to 1.0%	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%.

Sumner County among the counties of Kansas

25th of 105 by population, July 2025. Every one is listed on the Kansas page.

Counties of Kansas near Sumner County in population, July 2025
County	July 2025	Change since 2020
McPherson County	30,064	−0.4%
Ellis County	29,075	+0.4%
Pottawatomie County	27,186	+6.9%
Franklin County	26,299	+1.1%
Barton County	24,790	−2.5%
Sumner County	22,312	−0.1%
Seward County	21,073	−3.6%
Labette County	19,685	−2.4%
Cherokee County	19,105	−1.0%
Dickinson County	18,637	+1.4%
Jefferson County	18,296	−0.2%

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