Sumner County Flag

Sumner County

State:
Kansas
County Seat:
Wellington

Sumner County's estimated 2025 population is 22,284 with a growth rate of -0.11% in the past year according to the most recent United States census data. Sumner County is the 25th largest county in Kansas. The 2010 population was 24,119 and has seen a growth of -7.61% since that time.

22,284
Total Population
19
Population Density (miĀ²)
25
Population Rank (State)
-25 -0.11%
Annual Population Growth

Sumner County Population

Sumner County Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Sumner County includes 89.9% White, and smaller percentages for Native American, other race, Black or African American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Native American

Other race

Black or African American

Asian

Native Hawaiian or Pacific Islander

Race
Population
Percentage (of total)
White20,12589.9%
Two or more races1,3035.82%
Native American3421.53%
Other race2651.18%
Black or African American2551.14%
Asian960.43%
Native Hawaiian or Pacific Islander00%

Sumner County Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Sumner County's average per capita income is $46,542. Household income levels show a median of $60,348. The poverty rate stands at 10.75%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Married Families$97,299-
Families$82,406$97,873
Households$60,348$78,544
Non Families$38,217$42,741

$46,542

Average Income

$60,348

Median Household Income

10.75%

Poverty Rate