Sumner County, Kansas Demographics 2026

Name: Sumner County, Kansas Demographics
Creator: U.S. Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

Sumner County, Kansas has a population of 22,353, the 25th most populous county in Kansas. The median household income is $63,951 and the median home value is $135,100. The poverty rate is 10.6%.

Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes

Sumner County Quick Facts

Population 22,353

Median Household Income $63,951

Median Home Value $135,100

Poverty Rate 10.6%

Unemployment Rate 5.9%

Median Age 41.3 years

Homeownership Rate 75.1%

Affordability Ratio 2.1x

Bachelor's Degree+ 25.9%

High School Graduation 94.7%

Cities/Places 11

Population 22,353 25th of 105

Median Income $63,951 14% lower than state

Poverty Rate 10.6%

Unemployment 5.9%

How Sumner County Changed

Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.

Metric	2019–2023	2020–2024	Change
Population	22,386	22,353	-0.1%
Median household income	$60,348	$63,951	+6.0%
Median home value	$118,700	$135,100	+13.8%

Median Household Income

Sumner

$63,951

$74,275

National

$80,734

Median Home Value

Sumner

$135,100

$217,200

National

$332,700

Economy & Housing

Household Income Distribution

Under $25K 16.5%

$25K-$50K 21.0%

$50K-$100K 30.5%

$100K+ 32.0%

Detailed income brackets

Under $10K

4.7%

$10K-$15K

3.3%

$15K-$20K

6.2%

$20K-$25K

2.3%

$25K-$30K

5.2%

$30K-$35K

3.1%

$35K-$40K

4.2%

$40K-$45K

4.7%

$45K-$50K

3.8%

$50K-$60K

8.3%

$60K-$75K

11.4%

$75K-$100K

10.8%

$100K-$125K

12.3%

$125K-$150K

6.6%

$150K-$200K

8.0%

$200K+

5.1%

Employment

5.9% Unemployment Rate State: 3.9%|National: 5.2%

59.7% Labor Force Participation

Housing Overview

Owner 75.1%

Renter 24.9%

Affordability Index Very Affordable

2.1x home value to income ratio

Median gross rent $825/mo 15.5% of median household income annually

People & Demographics

Age Distribution

Under 18

24.1%

18-34

19.1%

35-54

22.9%

55-74

26.3%

75+

7.7%

Race & Ethnicity

Diversity Index

Low Diversity

A less diverse community where one racial or ethnic group represents a large majority.

State average: 45 | National average: 61

Education

Educational Attainment (Adults 25+)

Cities & Places in Sumner County

City	Population	Median Income	Poverty	Home Value
Wellington	7,615	$50,333	16.4%	$97,100
Conway Springs	1,573	$73,320	11.2%	$113,300
Belle Plaine	1,449	$63,214	16.8%	$123,900
Caldwell	976	$44,286	12.8%	$75,600
Oxford	964	$59,167	7.1%	$117,200
Argonia	542	$79,531	7.8%	$122,800
South Haven	276	$78,750	2.5%	$81,700
Milton	185	$40,000	0.0%	N/A
Hunnewell	104	$42,045	60.6%	N/A
Mayfield	102	$52,750	7.8%	$91,300
Milan	80	N/A	6.3%	N/A

Explore Kansas Rankings

Cities by Population All cities ranked by size Richest Cities Ranked by median income Most Educated By bachelor's degree rate Most Affordable By housing affordability

Population Overview

Sumner County is located in Kansas with a total population of 22,353. It is the 25th most populous county out of 105 in Kansas. The county encompasses 11 Census-designated places.

Age Demographics

The median age in Sumner County is 41.3 years. This is 10% higher than the state median of 37.4 years.

Economy, Income & Housing

The median household income in Sumner County is $63,951. This is 14% lower than the state median of $74,275. It is also 21% lower than the national median of $80,734. The poverty rate stands at 10.6%. This is 6% lower than the state poverty rate of 11.3%. The unemployment rate is 5.9%. This is 52% higher than the state rate of 3.9%. The median home value is $135,100. Housing costs are 38% lower than the state median of $217,200. With a home-value-to-income ratio of just 2.1x, Sumner County is one of the most affordable housing markets in the area. 75.1% of occupied housing units are owner-occupied. This homeownership rate is 12% higher than the state average of 67.2%.

Race & Ethnicity

Sumner County has a predominantly White (non-Hispanic) population, comprising 86.5% of all residents. Hispanic or Latino residents account for 6.1%. The Black or African American population (1.1%) is well below the state average of 5.1%. The Hispanic or Latino population (6.1%) is well below the state average of 13.6%. The Asian population (0.4%) is well below the state average of 2.9%.

Education

25.9% of residents aged 25 and older hold a bachelor's degree or higher. This is 27% lower than the state rate of 35.6%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 94.7%.

Data Sources & Methodology

All figures for Sumner County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against Kansas and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.

Frequently Asked Questions

What is the population of Sumner County, Kansas?

Sumner County has a population of 22,353, making it the 25th most populous county in Kansas.

What is the median income in Sumner County?

The median household income in Sumner County is $63,951 with a poverty rate of 10.6%.

How many cities are in Sumner County, Kansas?

Sumner County contains 11 Census-designated places.