St. Louis, MO-IL, Illinois: Industrial Catholic Metro metro. In 2024, voted D+1%. Democratic peak: D+36 in 1964.
Key facts
- 2024 presidential margin
- D+1MIT Election Lab
- Political typology
- Industrial Catholic MetroAkashic typology
- Population
- 2,810,8502024 5-year
- Median household income
- $81,6502024 5-year
- White (non-Hispanic)
- 71.4%2024 5-year
- Black
- 17.2%2024 5-year
- Hispanic / Latino
- 4.0%2024 5-year
- Peak Democratic margin
- D+36 in 1964MIT Election Lab
- Peak Republican margin
- R+23 in 1920MIT Election Lab
2024 presidential election
St. Louis, MO-IL
HarrisD+1
How it voted
Share of the 2024 vote
| Kamala Harris ✓Democratic | 49.4% | 698,935 |
|---|---|---|
| Donald TrumpRepublican | 48.6% | 687,523 |
| OtherAll other candidates | 1.9% | 27,454 |
D+60R+60
15 counties, each filled by 2024 D-vs-R margin. Hover any county for its result.
presidential history
Presidential margin, 1876–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1876 | No data |
| 1880 | No data |
| 1884 | No data |
| 1888 | No data |
| 1892 | +1.9% |
| 1896 | −9.0% |
| 1900 | −2.0% |
| 1904 | −10.3% |
| 1908 | −9.5% |
| 1912 | +8.6% |
| 1916 | −5.6% |
| 1920 | −23.1% |
| 1924 | −16.6% |
| 1928 | +0.7% |
| 1932 | +28.5% |
| 1936 | +27.2% |
| 1940 | +8.8% |
| 1944 | +10.8% |
| 1948 | +18.5% |
| 1952 | +10.5% |
| 1956 | +7.4% |
| 1960 | +15.0% |
| 1964 | +35.9% |
| 1968 | +8.5% |
| 1972 | −12.2% |
| 1976 | +4.2% |
| 1980 | −4.9% |
| 1984 | −15.1% |
| 1988 | +1.5% |
| 1992 | +16.5% |
| 1996 | +13.5% |
| 2000 | +8.0% |
| 2004 | +7.8% |
| 2008 | +16.1% |
| 2012 | +6.9% |
| 2016 | −0.8% |
| 2020 | +3.3% |
| 2024 | +0.8% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| D | 698,935 | 687,523 | 1,413,912 | ||
| D | 742,085 | 693,693 | 1,466,285 | ||
| R | 645,962 | 656,719 | 1,385,633 | ||
| D | 713,828 | 619,990 | 1,360,675 | ||
| D | 825,040 | 593,436 | 1,434,418 | ||
| D | 716,493 | 612,347 | 1,336,327 | ||
| D | 614,278 | 521,580 | 1,164,529 | ||
| D | 551,340 | 406,823 | 1,067,786 | ||
| D | 579,480 | 378,791 | 1,213,824 | ||
| D | 544,743 | 528,195 | 1,076,942 | ||
| R | 463,885 | 628,521 | 1,093,749 | ||
| R | 485,904 | 538,410 | 1,079,222 | ||
| D | 528,831 | 485,716 | 1,031,281 | ||
| R | 431,533 | 551,856 | 985,032 | ||
| D | 466,471 | 384,520 | 963,200 | ||
| D | 651,269 | 307,060 | 958,329 | ||
| D | 566,706 | 418,547 | 985,802 | ||
| D | 489,301 | 421,679 | 911,410 | ||
| D | 503,319 | 407,563 | 912,277 | ||
| D | 433,754 | 297,205 | 736,202 | ||
| D | 399,036 | 321,324 | 722,825 | ||
| D | 441,894 | 370,111 | 815,267 | ||
| D | 481,509 | 270,854 | 775,050 | ||
| D | 433,564 | 237,340 | 689,217 | ||
| D | 317,678 | 313,377 | 634,456 | ||
| R | 169,091 | 250,988 | 492,374 | ||
| R | 169,605 | 281,147 | 483,683 | ||
| R | 154,130 | 173,119 | 337,875 | ||
| D | 103,818 | 82,476 | 246,750 | ||
| R | 109,223 | 133,495 | 254,238 | ||
| R | 89,380 | 111,288 | 212,867 | ||
| R | 106,323 | 110,734 | 223,229 | ||
| R | 95,029 | 114,081 | 211,338 | ||
| D | 74,699 | 71,900 | 150,844 | ||
| — | — | — | — | ||
| — | — | — | — | ||
| — | — | — | — | ||
| — | — | — | — |
Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
25.4%
Irish
12.7%
English
10.1%
American
5.8%
Italian
4.5%
French
2.7%
Polish
2.3%
Source · American Community Survey 5-year estimates, 2024 release. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
2024 ACS
Age distribution by sex
Median age: 40.0 in this county, 39.1 nationally
Male
Age
Female
85+
75–84
65–74
55–64
45–54
35–44
25–34
18–24
5–17
<5
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Median household income
Inflation-adjusted dollars
$81,650
St. Louis, MO-IL ranks near the middle of US counties.
St. Louis, MO-IL$81,650
Illinois$70,702
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Poverty rate
All persons below federal poverty line
10.5%
Child poverty is below the national average.
Children under 1813.8%
Working age (18–64)9.6%
Seniors (65+)10.1%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
93.1%
speak English only
Spanish2.3%
Other Indo-European2.2%
Asian & Pacific Islander1.8%
Other languages0.6%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 49.2% of residents not counted as adherents by any reporting body.
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 thirty-six points in 1964 and a Republican high of twenty-three points in 1920. Between 2020 and 2024 the metro moved two points toward the Republican candidate; the 2024 margin was one point.
A population of 2,810,850, a 71% non-Hispanic-white share, and a median household income of $81,650 describe the metro.
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.
License: CC BY 4.0
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+1), carried by the Democratic candidate. Out of 1,413,912 votes cast, 698,935 went Democratic and 687,523 went Republican.
What is St. Louis, MO-IL, Illinois's political typology?
Akashic places St. Louis, MO-IL, Illinois in the "Industrial Catholic Metro" typology. The typology is a data-driven cluster built from vote share, vote swing, race and ethnicity, income, language spoken at home, religion, and ancestry. Across 38 elections in the dataset, the metro has voted Democratic 23 times, Republican 11 times, and other 0 times.
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 $70,702.
What is the political history of St. Louis, MO-IL, Illinois?
Akashic tracks 38 presidential elections in St. Louis, MO-IL, Illinois from 1876 to 2024. Of those, 23 went Democratic and 11 went Republican. The metro's typology — "Industrial Catholic Metro" — captures where that record, its demographics, and its recent swing place it among American communities.