Eureka, Missouri Demographics & Population 2026
During the 2020–2024 ACS period, Eureka, Missouri had a total population of 13,081, the 69th largest city in Missouri, with a median household income of $108,394, which is 53% higher than the state average. The poverty rate is 7.9%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Household income is 53% above the state average — one of the wealthiest communities in Missouri.
- 52.5% of adults hold a bachelor's degree or higher — top 10% in Missouri.
Eureka Quick Facts
How Eureka Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 12,371 | 13,081 | +5.7% |
| Median household income | $108,947 | $108,394 | -0.5% |
| Median home value | $352,200 | $379,200 | +7.7% |
How Eureka Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 40 | National average: 61
Education
Educational Attainment (Adults 25+)
Eureka Rankings in Missouri
Explore Missouri Rankings
Other Cities in St. Louis County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Florissant | 51,773 | $65,318 | 10.1% | $148,800 |
| Chesterfield | 49,574 | $133,037 | 3.9% | $472,500 |
| Oakville | 35,333 | $106,362 | 6.4% | $318,600 |
| Wildwood | 35,133 | $161,060 | 2.2% | $495,800 |
| University City | 34,685 | $80,694 | 14.5% | $306,700 |
| Ballwin | 31,279 | $124,626 | 4.8% | $377,100 |
| Mehlville | 29,805 | $67,071 | 7.8% | $218,400 |
| Kirkwood | 29,363 | $121,270 | 5.3% | $451,400 |
| Maryland Heights | 27,880 | $86,436 | 4.7% | $227,000 |
| Hazelwood | 25,114 | $55,908 | 15.9% | $167,400 |
Cities Similar to Eureka
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Crestwood | 12,295 | $107,169 | $319,600 | 56.8% | 5.5% |
| Dardenne Prairie | 13,503 | $152,500 | $432,000 | 55.1% | 1.3% |
| Festus | 13,201 | $73,532 | $223,600 | 24.4% | 17.1% |
| Kearney | 10,885 | $103,622 | $298,400 | 36.8% | 3.6% |
| Union | 12,781 | $73,435 | $205,200 | 23.7% | 8.2% |
Population Overview
Eureka is a small city located in Missouri, within St. Louis County. The total population is 13,081. It ranks as the 69th most populous out of 1,062 Census-designated places in Missouri.
Age Demographics
The median age in Eureka is 37.5 years. This is 4% lower than the state median of 39.0 years. With 30.3% of the population under 18, Eureka has a notably young demographic profile, suggesting a family-oriented community.
Economy, Income & Housing
The median household income in Eureka is $108,394. This is 53% higher than the state median of $70,702. It is also 34% higher than the national median of $80,734. The poverty rate stands at 7.9%. This is 37% lower than the state poverty rate of 12.6%. The unemployment rate is 3.4%. This is 15% lower than the state rate of 4.0%. The median home value is $379,200. Housing costs are 65% higher than the state median of $230,300. The home-value-to-income ratio is 3.5x. 79.3% of occupied housing units are owner-occupied. This homeownership rate is 16% higher than the state average of 68.1%.
Race & Ethnicity
Eureka has a predominantly White (non-Hispanic) population, comprising 85.6% of all residents. Hispanic or Latino residents account for 3.0%. The Black or African American population (0.8%) is well below the state average of 10.9%.
Education
52.5% of residents aged 25 and older hold a bachelor's degree or higher. This places Eureka in the top 10% of all cities in the state for educational attainment. This is 62% higher than the state rate of 32.4%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 96.6%. Notably, 22.3% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for Eureka, Missouri is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Missouri state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,062 Census-designated places in Missouri. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of Eureka, Missouri?
Eureka, Missouri has a population of 13,081 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Eureka, MO?
The median household income in Eureka is $108,394, which is 34% higher than the national median of $80,734.
What is the poverty rate in Eureka, MO?
The poverty rate in Eureka is 7.9%. This means approximately 1,013 residents live below the federal poverty line.
What is the racial makeup of Eureka, Missouri?
Eureka's population is 85.6% White, 0.8% Black, 3.0% Hispanic/Latino, and 2.2% Asian.
What is the median home value in Eureka, MO?
The median home value in Eureka is $379,200. The home-value-to-income ratio is 3.5x.
How educated is Eureka, Missouri?
52.5% of adults (25+) in Eureka hold a bachelor's degree or higher, and 22.3% hold a graduate or professional degree.