Eureka Flag

Eureka

County Seat:
No
Area (mi²):
11.14
State:
Missouri

Eureka is a city located in St. Louis County, Missouri. Eureka has a 2025 population of 13,974. Eureka is currently growing at a rate of 3.26% annually and its population has increased by 18.74% since the most recent census, which recorded a population of 11,769 in 2020.

The average household income in Eureka is $136,584 with a poverty rate of 6.16%.The median age in Eureka is 37.5 years: 36.3 years for males, and 38.9 years for females.

14K
Total Population
1,254
Density (mi²)
441 3.26%
Growth

Eureka Population

Eureka Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Eureka includes 87.49% White, and smaller percentages for Asian, other race, Black or African American, Native American and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White10,82487.49%
Two or more races1,0688.63%
Asian2692.17%
Other race1601.29%
Black or African American490.4%
Native American10.01%

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 $75,134. Household income levels show a median of $108,947. The poverty rate stands at 6.16%.

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$146,083-
Families$139,200$158,404
Households$108,947$136,584
Non Families$52,104$79,501

$75,134

Average Income

$108,947

Median Household Income

6.16%

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)