Missouri 18th State Senate District, Missouri: Republican loyalist district. In 2024, voted R+54%. Republican peak: R+54 in 2024.
Key facts
- 2024 presidential margin
- R+54MIT Election Lab
- Political archetype
- Republican loyalistAkashic typology
- Population
- 176,4962024 5-year
- Median household income
- $59,6112024 5-year
- White (non-Hispanic)
- 90.7%2024 5-year
- Black
- 3.4%2024 5-year
- Hispanic / Latino
- 2.1%2024 5-year
- 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.
5 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 18,496 | 62,609 | 81,964 | ||
| R | 19,598 | 61,504 | 82,512 | ||
| R | 18,579 | 57,516 | 79,665 | ||
| R | 26,724 | 48,755 | 77,272 | ||
| R | 32,887 | 48,000 | 82,353 |
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
$59,611
State Senate District 18 ranks near the middle of US counties.
State Senate District 18$59,611
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 Republican margin in Missouri 18th State Senate District reached its widest at fifty-four points in 2024. The margin in 2024 was fifty-four points, in line with the district's deep historical pattern.
Its loyalty is rooted in its place. Median household income of $59,611, a 91% non-Hispanic-white share, and a population of 176,496 together describe a district whose political habits are deeply settled.
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
State Senate District 18, Missouri — The Long Memory. Akashic Intelligence — The Long Memory. https://tiers.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 81,964 votes cast, 18,496 went Democratic and 62,609 went Republican.
What is State Senate District 18, Missouri's political archetype?
Akashic classifies State Senate District 18, Missouri as a "Republican loyalist" district based on its long-arc presidential voting pattern. Across 5 elections in the dataset, the district has voted Democratic 0 times, Republican 5 times, and other 0 times.
How many people live in State Senate District 18, Missouri?
State Senate District 18, Missouri has a population of 176,496 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 $59,611 — 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 5 presidential elections in State Senate District 18, Missouri from 2008 to 2024. Of those, 0 went Democratic and 5 went Republican. The district's archetype — "Republican loyalist" — captures the overall trajectory of that voting record.