Missouri 18th State Senate District, Missouri: Populist district. In 2024, voted R+54%. Republican peak: R+54 in 2024.
Key facts
- 2024 presidential margin
- R+54MIT Election Lab
- Political archetype
- PopulistAkashic typology
- Population
- 176,6862024 5-year
- Median household income
- $59,6092024 5-year
- White (non-Hispanic)
- 90.7%2024 5-year
- Black
- 3.4%2024 5-year
- Hispanic / Latino
- 2.1%2024 5-year
- Peak Democratic margin
- D+41 in 1932MIT Election Lab
- Peak Republican margin
- R+54 in 2024MIT Election Lab
Constituent county margins for State Senate District 18, MOOne cell per constituent county, colored by 2024 presidential margin from deep red (Republican) through neutral to deep blue (Democratic), ordered bluest first.
R+60D+60
One cell per constituent county. Ordered by 2024 D-vs-R margin (bluest first). Hover for county-level numbers.
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 18,515 | 62,688 | 82,117 | ||
| R | 19,618 | 61,582 | 82,947 | ||
| R | 18,599 | 57,587 | 79,759 | ||
| R | 26,758 | 48,811 | 77,364 | ||
| R | 32,926 | 48,054 | 82,411 | ||
| R | 31,945 | 49,697 | 82,174 | ||
| R | 32,658 | 43,085 | 77,356 | ||
| D | 34,231 | 29,265 | 73,091 | ||
| D | 35,779 | 27,557 | 79,992 | ||
| D | 38,257 | 36,420 | 74,878 | ||
| R | 33,242 | 47,561 | 80,803 | ||
| R | 37,566 | 44,175 | 83,969 | ||
| D | 42,570 | 36,155 | 79,272 | ||
| R | 29,017 | 48,962 | 77,979 | ||
| R | 35,931 | 36,487 | 80,084 | ||
| D | 55,123 | 26,727 | 81,850 | ||
| D | 47,208 | 44,373 | 91,581 | ||
| D | 49,038 | 41,503 | 90,541 | ||
| D | 53,512 | 45,721 | 99,453 | ||
| D | 58,616 | 30,733 | 89,516 | ||
| D | 54,318 | 38,233 | 92,710 | ||
| D | 66,128 | 44,362 | 110,825 | ||
| D | 71,281 | 36,820 | 108,676 | ||
| D | 68,653 | 28,296 | 97,854 | ||
| R | 47,320 | 49,554 | 97,143 | ||
| D | 54,526 | 39,851 | 99,886 | ||
| D | 54,784 | 45,380 | 101,857 | ||
| D | 37,219 | 24,101 | 62,610 | ||
| D | 33,418 | 15,720 | 58,519 | ||
| D | 35,340 | 24,428 | 61,361 | ||
| D | 31,121 | 24,585 | 57,692 | ||
| D | 37,282 | 24,238 | 62,974 | ||
| D | 40,356 | 24,802 | 65,594 | ||
| D | 32,234 | 20,622 | 57,085 | ||
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Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
20.3%
English
12.3%
Irish
10.1%
American
8.5%
Italian
1.7%
Scottish
1.5%
French
1.4%
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.
Age distribution by sex
Median age: 39.6 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.
Median household income
2024 inflation-adjusted dollars
$59,609
State Senate District 18 ranks near the middle of US counties.
State Senate District 18$59,609
Missouri$70,702
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
14.7%
Children face moderate poverty.
Children under 1816.1%
Working age (18–64)14.1%
Seniors (65+)15.3%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
96.3%
speak English only
Other Indo-European2.1%
Spanish0.9%
Asian & Pacific Islander0.4%
Other languages0.2%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 51.9% of residents not counted as adherents by any reporting body.
With a 2024 presidential margin of D+21, Missouri Senate District 18 sits well outside the statewide competitive range. Its urban core drives consistent Democratic performance in a state that has otherwise shifted sharply rightward over the past decade.
The Democratic margin in Missouri 18th State Senate District peaked at forty-one points in 1932. By 2000 the district had flipped, voting Republican for the first time in many years. The 2024 margin was fifty-four points, the most Republican-leaning result in the district's modern history.
The economic context is the key. The median household income of $59,609 sits well below state and national norms, and 15% of residents live below the federal poverty line. The shift here is part of a broader realignment of working-class places across the country.
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.
State Senate District 18, Missouri. Akashic. https://akashic.app/sld-upper/29018/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Frequently asked questions
How did State Senate District 18, Missouri vote in 2024?
In 2024, State Senate District 18, Missouri voted Republican by 53.8 points (R+54), carried by the Republican candidate. Out of 82,117 votes cast, 18,515 went Democratic and 62,688 went Republican.
What is State Senate District 18, Missouri's political archetype?
Akashic classifies State Senate District 18, Missouri as a "Populist" district based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the district has voted Democratic 22 times, Republican 12 times, and other 0 times.
When did State Senate District 18, Missouri last vote Democratic?
The most recent presidential election in which State Senate District 18, Missouri voted Democratic was 1996.
How many people live in State Senate District 18, Missouri?
State Senate District 18, Missouri has a population of 176,686 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in State Senate District 18, Missouri?
Median household income in State Senate District 18, Missouri is $59,609 — below the national median of $80,734. The Missouri state median is $70,702.
What is the political history of State Senate District 18, Missouri?
Akashic tracks 38 presidential elections in State Senate District 18, Missouri from 1876 to 2024. Of those, 22 went Democratic and 12 went Republican. The district's archetype — "Populist" — captures the overall trajectory of that voting record.