Michigan 18th State Senate District, Michigan: Tossup district. In 2024, voted R+11%. Republican peak: R+58 in 1928.
Key facts
- 2024 presidential margin
- R+11MIT Election Lab
- Political archetype
- TossupAkashic typology
- Population
- 335,1092024 5-year
- Median household income
- $75,7802024 5-year
- White (non-Hispanic)
- 79.7%2024 5-year
- Black
- 6.9%2024 5-year
- Hispanic / Latino
- 7.6%2024 5-year
- Peak Democratic margin
- D+19 in 1964MIT Election Lab
- Peak Republican margin
- R+58 in 1928MIT Election Lab
Constituent county margins for State Senate District 18, MIOne 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 | 81,994 | 102,456 | 187,753 | ||
| R | 80,012 | 96,027 | 179,468 | ||
| R | 61,912 | 82,374 | 154,970 | ||
| R | 68,076 | 78,041 | 148,428 | ||
| D | 78,249 | 76,215 | 157,324 | ||
| R | 64,109 | 86,674 | 152,347 | ||
| R | 54,519 | 73,159 | 131,279 | ||
| R | 51,252 | 56,912 | 118,889 | ||
| R | 48,506 | 52,614 | 129,707 | ||
| R | 43,509 | 65,617 | 109,877 | ||
| R | 36,736 | 74,776 | 112,187 | ||
| R | 41,361 | 63,738 | 116,186 | ||
| R | 40,334 | 64,855 | 106,866 | ||
| R | 37,710 | 61,056 | 100,929 | ||
| R | 35,710 | 49,471 | 94,523 | ||
| D | 52,946 | 35,815 | 88,952 | ||
| R | 34,981 | 56,715 | 92,036 | ||
| R | 29,006 | 56,944 | 86,288 | ||
| R | 27,491 | 52,973 | 81,171 | ||
| R | 23,221 | 33,774 | 58,458 | ||
| R | 24,455 | 37,036 | 62,195 | ||
| R | 27,173 | 37,372 | 64,978 | ||
| D | 28,847 | 26,066 | 57,438 | ||
| R | 26,595 | 27,404 | 55,709 | ||
| R | 9,978 | 38,069 | 48,361 | ||
| R | 7,236 | 30,994 | 42,044 | ||
| R | 10,050 | 27,547 | 39,352 | ||
| D | 13,410 | 12,651 | 27,356 | ||
| O | 7,186 | 6,089 | 23,904 | ||
| R | 8,394 | 13,414 | 23,440 | ||
| R | 6,142 | 15,137 | 22,815 | ||
| R | 10,854 | 13,376 | 25,175 | ||
| R | 11,893 | 12,990 | 25,585 | ||
| R | 8,378 | 10,670 | 21,957 | ||
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Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
18.4%
English
12.0%
Irish
9.7%
American
4.6%
Polish
4.6%
French
2.4%
Italian
2.0%
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: 38.7 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
$75,780
State Senate District 18 ranks near the middle of US counties.
State Senate District 18$75,780
Michigan$72,875
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
10.8%
Child poverty is below the national average.
Children under 1813.5%
Working age (18–64)10.1%
Seniors (65+)9.1%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
91.5%
speak English only
Spanish4.4%
Other Indo-European1.9%
Asian & Pacific Islander1.4%
Other languages0.8%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 64.7% of residents not counted as adherents by any reporting body.
With a 2024 presidential margin of D+53.5, this district ranks among the most heavily Democratic in the state, reflecting a dense, urban constituency where statewide competitive races are seldom in doubt at the district level.
The district's recent history is a story of close margins. The Democratic margin reached nineteen points in 1964; the Republican margin reached fifty-eight points in 1928. Most other elections have been decided by single-digit points.
Its demographics — a population of 335,109, a 80% non-Hispanic-white share, a median household income of $75,780 — situate the district close to national averages on several dimensions.
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, Michigan. Akashic. https://akashic.app/sld-upper/26018/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Frequently asked questions
How did State Senate District 18, Michigan vote in 2024?
In 2024, State Senate District 18, Michigan voted Republican by 10.9 points (R+11), carried by the Republican candidate. Out of 187,753 votes cast, 81,994 went Democratic and 102,456 went Republican.
What is State Senate District 18, Michigan's political archetype?
Akashic classifies State Senate District 18, Michigan as a "Tossup" district based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the district has voted Democratic 4 times, Republican 29 times, and other 1 times.
When did State Senate District 18, Michigan last vote Democratic?
The most recent presidential election in which State Senate District 18, Michigan voted Democratic was 2008.
How many people live in State Senate District 18, Michigan?
State Senate District 18, Michigan has a population of 335,109 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, Michigan?
Median household income in State Senate District 18, Michigan is $75,780 — below the national median of $80,734. The Michigan state median is $72,875.
What is the political history of State Senate District 18, Michigan?
Akashic tracks 38 presidential elections in State Senate District 18, Michigan from 1876 to 2024. Of those, 4 went Democratic and 29 went Republican. The district's archetype — "Tossup" — captures the overall trajectory of that voting record.