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 (mi²)
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 and multiracial populations.

Population by Race

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%

Sumner County Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

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