Eureka Flag

Eureka

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

Eureka is a city located in Greenwood County, Kansas. Eureka has a 2026 population of 2,224. It is also the county seat of Greenwood County. Eureka is currently declining at a rate of -0.54% annually and its population has decreased by -3.22% since the most recent census, which recorded a population of 2,298 in 2020.

The median household income in Eureka is $48,828 with a poverty rate of 22.38%. The median age in Eureka is 42.5 years: 39.8 years for males, and 44.3 years for females. For every 100 females there are 91.0 males.

2.2K
Total Population
971
Density (mi²)
-12 -0.54%
Growth

Eureka Population

Eureka Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20262,224-12-0.54%
20252,236-13-0.58%
20242,249-18-0.79%
20232,267-5-0.22%
20222,272-5-0.22%
20212,277-37-1.6%
20202,298-56-2.38%
20192,354-5-0.21%
20182,359-25-1.05%
20172,384-15-0.63%
20162,399-51-2.08%
20152,450-27-1.09%
20142,477-30-1.2%
20132,507-27-1.07%
20122,534-74-2.84%
20112,608-29-1.1%
20102,63740.15%
20002,914-60-2.02%
19902,974-451-13.17%
19803,425-151-4.22%
19703,576-479-11.81%
19604,055972.45%
19503,9581554.08%
19403,8031052.84%
19303,6981,09241.9%
19202,60600%

Median Age

Overall: 42.5 years
Female: 44.3 years
Male: 39.8 years

Eureka Adults

There are 1,691 adults, (481 of whom are seniors) in Eureka.

Sex Ratio

Female: 1,164 (52.4%)
Male: 1,059 (47.6%)

Demographics

The racial composition of Eureka includes 89.92% White, 3.24% Native American, and smaller percentages for other race, Black or African American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White1,99989.92%
Two or more races843.78%
Native American723.24%
Other race391.75%
Black or African American291.3%
Race
Population ↓
Percentage (of total)
Native American512.29%
Other race391.75%
Two or more races120.54%
White80.36%
Race
Population ↓
Percentage (of total)
White1,99189.56%
Two or more races723.24%
Black or African American291.3%
Native American210.94%

Eureka Marital Status

Economics and Income Statistics

Eureka 's average per capita income is $36,429. Household income levels show a median of $48,828. The poverty rate stands at 22.38%.

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$88,438-
Families$63,828$74,489
Households$48,828$64,964
Non Families$35,000$46,168

$36,429

Average Income

$48,828

Median Household Income

22.38%

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)