Eureka Flag

Eureka

County:
Woodford County
County Seat:
No
Area (mi²):
2.737
State:
Illinois

Eureka is a city located in Woodford County, Illinois. Eureka has a 2025 population of 5,166. Eureka is currently declining at a rate of -0.19% annually and its population has decreased by -0.96% since the most recent census, which recorded a population of 5,216 in 2020.

The average household income in Eureka is $72,759 with a poverty rate of 13.94%.The median age in Eureka is 40.7 years: 36.2 years for males, and 49.9 years for females.

5.2K
Total Population
1,888
Density (mi²)
-10 -0.19%
Growth

Eureka Population

Eureka Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Eureka includes 93.07% White, and smaller percentages for Black or African American, other race, Asian and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White4,74293.07%
Two or more races1563.06%
Black or African American961.88%
Other race901.77%
Asian110.22%

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 $55,878. Household income levels show a median of $55,172. The poverty rate stands at 13.94%.

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$100,658-
Families$86,582$101,689
Households$55,172$72,759
Non Families$22,336$32,018

$55,878

Average Income

$55,172

Median Household Income

13.94%

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)