Eureka Flag

Eureka

County Seat:
Yes
Area (mi²):
2.29
State:
Kansas

Eureka is a city located in Greenwood County, Kansas. Eureka has a 2025 population of 2,236 . It is also the county seat of Greenwood County . Eureka is currently declining at a rate of -0.58% annually and its population has decreased by -2.7% since the most recent census, which recorded a population of 2,298 in 2020.

The average household income in Eureka is $64,456 with a poverty rate of 26.47%. The median age in Eureka is 44.4 years: 41.7 years for males, and 50.1 years for females. For every 100 females there are 93.8 males.

2.2K
Total Population
976
Density (mi²)
-13 -0.58%
Growth

Eureka Population

Eureka Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Eureka includes 90.66% White, and smaller percentages for Native American, other race, Black or African American, Asian and multiracial populations.

Population by Race

White (90.66%)

Two or more races (4.62%)

Native American (2.47%)

Other race (1.19%)

Black or African American (0.84%)

Asian (0.22%)

Race
Population
Percentage (of total)
White2,05990.66%
Two or more races1054.62%
Native American562.47%
Other race271.19%
Black or African American190.84%
Asian50.22%

Eureka Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Eureka's average per capita income is $32,331. Household income levels show a median of $45,121. The poverty rate stands at 26.47%.

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$95,536-
Families$61,705$73,444
Households$45,121$64,456
Non Families$30,250$46,761

$32,331

Average Income

$45,121

Median Household Income

26.47%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)