HarrisDemocratic49.5%698,935TrumpRepublican48.7%687,523OtherAll other candidates1.7%24,679
D+0.8- Lead
- 11,412
- Total
- 1,411,137
- vs nation
- D+2.3
Akashicmetro area
St. Louis, MO-IL
Office (updates table and map)
President margin by year
Place winner margin
15 counties by 2024 margin · County returns · MIT Election Lab
President results by year
Vote totals, margins, and source status
BidenDemocratic50.6%742,085TrumpRepublican47.3%693,693OtherAll other candidates2.1%30,507
D+3.3- Lead
- 48,392
- Total
- 1,466,285
- vs nation
- R+1.2
ClintonDemocratic46.6%645,962TrumpRepublican47.4%656,719OtherAll other candidates6.0%82,952
R+0.8- Lead
- 10,757
- Total
- 1,385,633
- vs nation
- R+2.9
ObamaDemocratic52.5%713,828RomneyRepublican45.6%619,990OtherAll other candidates2.0%26,857
D+6.9- Lead
- 93,838
- Total
- 1,360,675
- vs nation
- D+3.0
ObamaDemocratic57.5%825,040McCainRepublican41.4%593,436OtherAll other candidates1.1%15,942
D+16.1- Lead
- 231,604
- Total
- 1,434,418
- vs nation
- D+8.9
KerryDemocratic53.6%716,493BushRepublican45.8%612,347OtherAll other candidates0.6%7,487
D+7.8- Lead
- 104,146
- Total
- 1,336,327
- vs nation
- D+10.3
GoreDemocratic52.7%614,278BushRepublican44.8%521,580OtherAll other candidates2.5%28,671
D+8.0- Lead
- 92,698
- Total
- 1,164,529
- vs nation
- D+7.4
ClintonDemocratic51.6%551,340DoleRepublican38.1%406,823OtherAll other candidates10.3%109,623
D+13.5- Lead
- 144,517
- Total
- 1,067,786
- vs nation
- D+5.0
Key facts
- 2024 presidential margin
- D+0.8MIT Election Lab
- Population
- 2,810,8502024 5-year
- Population density
- 357 / sq mi2024 5-year · TIGER/Line
- Land area
- 7,864 sq miTIGER/Line
- Median household income
- $81,6502024 5-year
- White (non-Hispanic)
- 70.6%2024 5-year
- Black
- 17.1%2024 5-year
- Hispanic / Latino
- 4.0%2024 5-year
- Peak Democratic margin
- D+35.9 in 1964MIT Election Lab
- Peak Republican margin
- R+23.1 in 1920MIT Election Lab
- Most similar
- Philadelphia-Camden-Wilmington, PA-NJ-DE-MD · twin score 90.9
presidential history
Party record book
St. Louis, MO-IL · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1892–2024 · 34 presidential cycles
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Lyndon B. Johnson1964
68.0%
651,269 votes · D+35.9
Runner-up · Franklin D. Roosevelt, 1932 · 62.9%
Republican
Warren G. Harding1920
58.1%
281,147 votes · R+23.1
Runner-up · Ronald Reagan, 1984 · 57.5%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Barack Obama2008
825,040votes
57.5% of the vote · D+16.1
Runner-up · Joe Biden, 2020 · 742,085 votes
Republican
Donald Trump2020
693,693votes
47.3% of the vote · D+3.3
Runner-up · Donald Trump, 2024 · 687,523 votes
Best relative to the U.S.
This Place’s margin against the national margin in the same election — positive when it leaned toward the party more than the country did.
Democratic
Adlai Stevenson1956
+22.8pts D vs U.S.
Place D+7.4 · U.S. R+15.4
Runner-up · Adlai Stevenson, 1952 · +21.3 pts
Republican
William H. Taft1912
+10.9pts R vs U.S.
Place D+8.6 · U.S. D+19.5
Runner-up · Charles E. Hughes, 1916 · +8.8 pts
U.S. House elections · 3 House
Senate and governor results are in the Office selector at the top of this page.
U.S. House
On a multi-state Place, each row sums votes cast in the separate U.S. House races held inside the Place that year. It is a geographic vote total, not one contest or a seat tally.
voter registration
Registered voters
Total registered voters, over time
Registered voters
| Year | Total registered |
|---|---|
| 2016 | 2,051,618 |
| 2018 | 1,994,557 |
| 2020 | 1,905,191 |
| 2022 | 2,017,251 |
| 2024 | 2,073,660 |
domestic migration
Who moves in and out
Net domestic migration over time
−1,382 net domestic migration · 2025
20112025
Net −114,481 over 2011–2025 · gain loss
| Year | Net domestic migration |
|---|---|
| 2011 | −9,219 |
| 2012 | −11,077 |
| 2013 | −8,165 |
| 2014 | −7,953 |
| 2015 | −7,845 |
| 2016 | −12,341 |
| 2017 | −9,748 |
| 2018 | −9,435 |
| 2019 | −7,685 |
| 2021 | −5,657 |
| 2022 | −13,896 |
| 2023 | −5,980 |
| 2024 | −4,098 |
| 2025 | −1,382 |
St. Louis has lost population in its urban core for decades while inner-ring suburbs have absorbed growth, producing a fragmented political map where city precincts, older suburbs, and exurban counties routinely return starkly different margins.
Across the recorded series it reached a Democratic high of 35.9 points in 1964 and a Republican high of 23.1 points in 1920. Between 2020 and 2024 the metro moved 2.5 points toward the Republican candidate; the 2024 margin was 0.8 points.
A population of 2,810,850, a 71% non-Hispanic-white share, and a median household income of $81,650 describe the metro. The metro's voting pattern over the last decade is most similar to that of Philadelphia-Camden-Wilmington, PA-NJ-DE-MD and Detroit-Warren-Dearborn, MI.
Political twins — metros
The metros whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Philadelphia-Camden-Wilmington, PA-NJ-DE-MD
90.9twin score
population scale2000–2008 trajectory≠ 2016 margin
Detroit-Warren-Dearborn, MI
90.7twin score
population scale2000–2024 trajectory≠ Polish ancestry
Louisville/Jefferson County, KY-IN
89.4twin score
population scale2016–2024 trajectory
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.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
St. Louis, MO-IL, Illinois. Akashic. https://akashic.app/cbsa/41180/. Accessed May 20, 2026. License: CC BY 4.0.
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Frequently asked questions
How did St. Louis, MO-IL, Illinois vote in 2024?
In 2024, St. Louis, MO-IL, Illinois voted Democratic by 0.8 points (D+0.8), carried by the Democratic candidate. Out of 1,411,137 votes cast, 698,935 went Democratic and 687,523 went Republican.
When did St. Louis, MO-IL, Illinois last vote Republican?
The most recent presidential election in which St. Louis, MO-IL, Illinois voted Republican was 2016.
How many people live in St. Louis, MO-IL, Illinois?
St. Louis, MO-IL, Illinois has a population of 2,810,850 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in St. Louis, MO-IL, Illinois?
Median household income in St. Louis, MO-IL, Illinois is $81,650 — above the national median of $80,734. The Illinois state median is $83,390.
What is the political history of St. Louis, MO-IL, Illinois?
Akashic tracks 34 presidential elections in St. Louis, MO-IL, Illinois from 1892 to 2024. Of those, 23 went Democratic and 11 went Republican.