Eureka Flag

Eureka

County:
Sac County
County Seat:
No
Area (mi²):
36.07
State:
Iowa

Eureka is located in Sac County, Iowa. Eureka has a 2025 population of 892 . Eureka is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.

The average household income in Eureka is $85,309 with a poverty rate of 11.66%. The median age in Eureka is 39 years: 40.6 years for males, and 34.7 years for females. For every 100 females there are 118.1 males.

892
Total Population
25
Density (mi²)

Eureka Population

Eureka Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Eureka includes 79.48% White, 10.65% other race, 4.93% Native Hawaiian or Pacific Islander, and smaller percentages for Asian and multiracial populations.

Population by Race

White (79.48%)

Other race (10.65%)

Native Hawaiian or Pacific Islander (4.93%)

Two or more races (4.26%)

Asian (0.67%)

Race
Population
Percentage (of total)
White70979.48%
Other race9510.65%
Native Hawaiian or Pacific Islander444.93%
Two or more races384.26%
Asian60.67%

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 $46,583. Household income levels show a median of $67,273. The poverty rate stands at 11.66%.

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$91,250-
Families$71,379$98,332
Households$67,273$85,309
Non Families$37,500$50,919

$46,583

Average Income

$67,273

Median Household Income

11.66%

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)