† Citizen voting-age population estimated for prior cycles; 2004 predates the ACS and is extrapolated. Source: ACS 5-year, table B05003.
——
D+60R+60
20042024
Boundary by 2024 margin · Precinct returns · VEST · MIT Election Lab
People and households
Who lives here
Exact values for this place, its state, and the United States.
Race · ethnicity · ancestry
Communities and origins
GroupEurekaMissouriUnited States
German31.3%21.3%12.5%
Irish17.0%11.8%9.4%
English12.7%11.9%9.5%
American7.7%6.8%5.3%
Italian6.4%3.2%4.8%
French3.4%2.2%1.6%
Polish3.4%1.3%2.2%
Scottish2.1%1.8%1.3%
Mexican1.8%3.2%11.3%
Puerto Rican0.2%0.4%1.8%
Asian Indian0.9%0.6%1.4%
Chinese0.5%0.4%1.3%
Filipino0.2%0.2%0.9%
Vietnamese0.2%0.2%0.6%
Hispanic or Latino counts residents of any race; the race groups count only their non-Hispanic residents, so the groups are mutually exclusive and sum to 100%. Expand a row to see ancestries reported within that group.
Age and life stage
Measure
Eureka
Missouri
United States
Median age
37.5
39.2
39.1
Age 18–24
4.9%
9.2%
9.2%
Age 65 and older
13.6%
17.9%
17.2%
Household economy
Measure
Eureka
Missouri
United States
Median household income
$108,394
$70,702
$84,427
Poverty rate
7.9%
12.6%
12.5%
Bachelor's degree or higher (25+)
52.5%
32.4%
35.6%
Languages at home
Measure
Eureka
Missouri
United States
Speaks a non-English language at home
5.6%
6.7%
22.3%
Spanish
1.3%
2.9%
13.6%
Russian, Polish, or other Slavic
1.7%
0.5%
0.7%
Other Asian & Pacific Island
1.3%
0.5%
1.1%
Religious landscape
Measure
Eureka
Missouri
United States
Catholic
—
12.5%
18.6%
Evangelical Protestant
—
24.1%
16.5%
Unclaimed / not counted
—
51.7%
51.5%
American Community Survey 2024 5-year (CVAP, income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024 · 2020 U.S. Religion Census (ASARB) — congregational adherents; unclaimed is the residual not counted by congregations.
Eureka, Missouri
presidential history
Presidential margin, 2004–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
2004
−32.2%
2008
−22.0%
2012
−35.5%
2016
−34.2%
2020
−27.2%
2024
−23.6%
DemocraticRepublican
6 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024). Swing · margin change from the prior cycle. vs U.S. · margin relative to the national result that year. Third-party votes in 2012 are allocated from certified county totals by this place's share of each county's two-party vote — that cycle's precinct source records two-party splits. † 2004 sub-county results are estimated: the source's block-level detail for this cycle was unreliable — either county/municipality-level consolidated reporting (COVID-era) or a precinct-to-block allocation that misplaced votes — so the figures are allocated from the constituent county totals in proportion to the place and scaled to certified totals.
Year
Won
Democratic
Republican
Other
Margin
Swing
vs U.S.
Total
R
37.5%Harris2,634
61.1%Trump4,288
1.4%
R+23.6
D+3.7
R+22.1
7,023
R
35.5%Biden2,345
62.7%Trump4,141
1.7%
R+27.2
D+7.0
R+31.7
6,601
R
30.4%Clinton1,663
64.6%Trump3,534
5.0%
R+34.2
D+1.3
R+36.3
5,471
R
31.5%Obama1,551
67.0%Romney3,298
1.6%
R+35.5
R+13.5
R+39.3
4,926
R
38.5%Obama1,845
60.5%McCain2,900
1.0%
R+22.0
D+10.2
R+29.3
4,794
R
33.8%Kerry1,638
66.0%Bush3,202
0.2%
R+32.2
—
R+29.8
4,851
Eureka has grown steadily as St. Louis County's southwestern edge expands, drawing families from the metro core and shifting its electorate toward the patterns typical of fast-growing outer-ring communities.
Across the recorded series it reached a Republican high of 35.5 points in 2012. Between 2020 and 2024 the city moved 3.7 points toward the Democratic candidate; the 2024 margin was 23.6 points.
A population of 13,081, a 87% non-Hispanic-white share, and a median household income of $108,394 describe the city. The city's voting pattern over the last decade is most similar to that of Lake St. Louis and Spring Hill.
Akashic
Political twins — cities
The cities whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
In 2024, Eureka, Missouri voted Republican by 23.6 points (R+23.6), carried by the Republican candidate. Out of 7,023 votes cast, 2,634 went Democratic and 4,288 went Republican.
How many people live in Eureka, Missouri?
Eureka, Missouri has a population of 13,081 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Eureka, Missouri?
Median household income in Eureka, Missouri is $108,394 — above the national median of $80,734. The Missouri state median is $70,702.
What is the political history of Eureka, Missouri?
Akashic tracks 6 presidential elections in Eureka, Missouri from 2004 to 2024. Of those, 0 went Democratic and 6 went Republican.
