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
Housing cost is the defining feature of Sumner County: the median home is valued at $118,700. With 22,386 residents, Sumner County is a county in Kansas. It ranks #25 among counties in Kansas by population.
Household earnings are middling, with a median of $60,348 — below the US median of $78,538. Poverty runs at 7.6%, below the national 12.4%. Property is affordable here, the median home worth $118,700, with typical rent around $829.
Roughly 26.7% of adults have a bachelor’s, below the national 35.0%. Around 7.0% of workers work from home, below the national 14.0%, and the average commute runs about 24 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+
Largest cities in Kansas
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Part of Kansas
Metro areas in Kansas
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.