Sumner County, Kansas Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 25th-largest in Kansas
The population of Sumner County, Kansas is 22,386 as of the 2023 American Community Survey, making it the 25th-largest county in Kansas. The median household income is $60,348, the median home value is $118,700, and the median age is 41.2.
The population of Sumner County has declined 7.4% since 2010 (24,119 → 22,336), a -0.55% annualized rate.
22,386
Population
-0.55%
Annual growth
19
People / sq mi
$60,348
Median Income
$118,700
Median Home Value
Sumner County covers 1,182 sq mi of land at 18.9 people per square mile.
About Sumner County, KS
Sumner County is a county in Kansas with a population of 22,386. It ranks #25 among counties in Kansas by population. The median age is 41.2, older than the national median. The population is 50.5% male and 49.5% female.
The median household income in Sumner County is $60,348, below the US median of $74,580. 7.6% of residents live below the federal poverty level. Home values sit at a median of $118,700, with monthly rent averaging $829. The homeownership rate of 74.4% is higher than the national rate of 64.8%.
Educational attainment in Sumner County reflects 26.7% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 7.0% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 24.3 minutes each way.
Sumner County Population History (2010-2024)
The county of Sumner County had a population of 24,119 in 2010 and 22,336 in 2024, a -7.4% growth over 14 years. The peak was 24,119 in 2010. Average annual growth rate: -0.55%.
22,336
Population (2024)
24,119
Population (2010)
24,119
Peak (2010)
-0.55%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 24,119 |
| 2011 | 23,788 |
| 2012 | 23,632 |
| 2013 | 23,534 |
| 2014 | 23,381 |
| 2015 | 23,414 |
| 2016 | 23,165 |
| 2017 | 23,103 |
| 2018 | 22,982 |
| 2019 | 22,810 |
| 2020 | 22,323 |
| 2021 | 22,327 |
| 2022 | 22,384 |
| 2023 | 22,393 |
| 2024 | 22,336 |
Race & Ethnicity
| White | 89.9% |
| Black or African American | 1.1% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 3.7% |
| Two or More Races | 0.0% |
Age & Sex
41.2
Median Age
49.5%
Female
50.5%
Male
19.1%
Age 65+
Age Distribution
Children (under 15): 19.3% · Seniors (65+): 19.1%
Income & Poverty
| Median household income | $60,348$-12,291 vs state |
| Mean household income | $78,544 |
| Per-capita income | $32,318 |
| Poverty rate | 7.6%-0.1% vs state |
| Unemployment rate | 3.6% |
| Employment-to-population | 56.7% |
Top Industries by Employment
The largest employment sector in Sumner County is professional & business services, accounting for 24.3% of workers.
How residents commute
0.0%
Drive alone
3.0%
Carpool
82.5%
Public transit
7.0%
Work from home
24.3 min
Avg commute
Housing
$118,700$-84,700 vs state
Median home value
$829
Median rent
74.4%
Homeownership rate
10,395
Total housing units
86.3%
Occupied
13.7%
Vacant
25.6%
Renter-occupied
Social & access
91.1%
With health insurance
91.7%
With broadband internet
24.6%
Foreign-born
8.5%
Veterans (18+)
17.6%
With a disability
98.2%
Speak language other than English at home
Education
94.0%
High School+
26.7%
Bachelor's+
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County rankings
Frequently Asked Questions
Sumner County, Kansas has a population of 22,386 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 25th-largest county in Kansas. Population density is 19 people per square mile.
The population of Sumner County has declined 7.4% since 2010 (24,119 → 22,336), a -0.55% annualized rate.
The median household income in Sumner County, Kansas is $60,348, with mean (average) household income of $78,544 and per-capita income of $32,318. 7.6% of residents live below the federal poverty level.
In Sumner County, the largest racial and ethnic groups are White (89.9%), Hispanic or Latino (3.7%), Black or African American (1.1%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Sumner County, Kansas is 41.2 years. Residents are 49.5% female and 50.5% male.
The median home value in Sumner County is $118,700 and median monthly rent is $829. 74.4% of occupied housing units are owner-occupied. The county has 10,395 total housing units, 13.7% of which are vacant.
The largest employment sector in Sumner County, Kansas is professional, scientific, and management services, employing 24.3% of workers. The unemployment rate is 3.6%.
Wichita is among the largest cities associated with Sumner County, Kansas, with a population of 396,488.
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Statewide data for Kansas
Population, race, income, age, and trends across Kansas
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.