† 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
GroupSt. CharlesMissouriUnited States
German29.8%21.3%12.5%
Irish15.3%11.8%9.4%
English12.0%11.9%9.5%
Italian5.5%3.2%4.8%
American5.5%6.8%5.3%
French3.1%2.2%1.6%
Polish2.8%1.3%2.2%
Scottish1.9%1.8%1.3%
African American†6.7%10.0%9.9%
African0.3%0.3%0.5%
Mexican3.7%3.2%11.3%
Puerto Rican0.6%0.4%1.8%
Colombian0.3%—0.4%
Spanish0.3%——
Asian Indian1.6%0.6%1.4%
Chinese0.5%0.4%1.3%
Filipino0.5%0.2%0.9%
Vietnamese0.5%0.2%0.6%
Korean0.3%—0.4%
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
St. Charles
Missouri
United States
Median age
38.6
39.2
39.1
Age 18–24
12.7%
9.2%
9.2%
Age 65 and older
18.2%
17.9%
17.2%
Household economy
Measure
St. Charles
Missouri
United States
Median household income
$85,937
$70,702
$84,427
Poverty rate
7.3%
12.6%
12.5%
Bachelor's degree or higher (25+)
43.3%
32.4%
35.6%
Languages at home
Measure
St. Charles
Missouri
United States
Speaks a non-English language at home
8.5%
6.7%
22.3%
Spanish
4.1%
2.9%
13.6%
Religious landscape
Measure
St. Charles
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.
St. Charles, Missouri
presidential history
Presidential margin, 2004–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
2004
−8.8%
2008
−0.5%
2012
−11.1%
2016
−13.8%
2020
−2.5%
2024
−2.5%
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
47.9%Harris17,273
50.3%Trump18,168
1.8%
R+2.5
±0.0
R+1.0
36,086
R
47.7%Biden16,888
50.2%Trump17,769
2.0%
R+2.5
D+11.3
R+6.9
35,378
R
40.1%Clinton13,171
53.9%Trump17,717
6.1%
R+13.8
R+2.7
R+15.9
32,886
R
43.4%Obama13,595
54.5%Romney17,066
2.0%
R+11.1
R+10.6
R+14.9
31,290
R
49.0%Obama15,867
49.5%McCain16,026
1.4%
R+0.5
D+8.3
R+7.8
32,349
R
45.0%Kerry12,593
53.8%Bush15,047
1.2%
R+8.8
—
R+6.3
27,978
St. Charles anchors one of Missouri's fastest-expanding exurban counties, where population growth driven by St. Louis spillover has reinforced rather than diluted its long-standing Republican margins in statewide races.
Across the recorded series it reached a Republican high of 13.8 points in 2016. The 2024 margin was 2.5 points.
A population of 71,508, a 78% non-Hispanic-white share, and a median household income of $85,937 describe the city. The city's voting pattern over the last decade is most similar to that of St. Peters and O'Fallon.
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, St. Charles, Missouri voted Republican by 2.5 points (R+2.5), carried by the Republican candidate. Out of 36,086 votes cast, 17,273 went Democratic and 18,168 went Republican.
How many people live in St. Charles, Missouri?
St. Charles, Missouri has a population of 71,508 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in St. Charles, Missouri?
Median household income in St. Charles, Missouri is $85,937 — above the national median of $80,734. The Missouri state median is $70,702.
What is the political history of St. Charles, Missouri?
Akashic tracks 6 presidential elections in St. Charles, Missouri from 2004 to 2024. Of those, 0 went Democratic and 6 went Republican.
