St. Clair County, Michigan
Precinct data
Results by precinct
126 precincts · 93,719 votes
Precinct boundaries and identifiers are cycle-specific. This table does not join rows across years without a validated crosswalk.
| Precinct -St. Clair Township, Precinct 1St. Clair Township, Precinct 1 | 828 | 1,833 | 33 | 2,694 | 30.7% | 68.0% | R+37.3 |
|---|---|---|---|---|---|---|---|
| Precinct -East China Township, Precinct 1East China Township, Precinct 1 | 871 | 1,665 | 35 | 2,571 | 33.9% | 64.8% | R+30.9 |
| Precinct -Clay Township, Precinct 5Clay Township, Precinct 5 | 624 | 1,905 | 33 | 2,562 | 24.4% | 74.4% | R+50.0 |
| Precinct -Mussey Township, Precinct 1Mussey Township, Precinct 1 | 578 | 1,740 | 27 | 2,345 | 24.6% | 74.2% | R+49.6 |
| Precinct -Fort Gratiot Township, Precinct 4Fort Gratiot Township, Precinct 4 | 903 | 1,386 | 33 | 2,322 | 38.9% | 59.7% | R+20.8 |
| Precinct -Cottrellville Township, Precinct 1Cottrellville Township, Precinct 1 | 578 | 1,665 | 28 | 2,271 | 25.5% | 73.3% | R+47.9 |
| Precinct -Clyde Township, Precinct 1Clyde Township, Precinct 1 | 713 | 1,520 | 32 | 2,265 | 31.5% | 67.1% | R+35.6 |
| Precinct -St. Clair Township, Precinct 2St. Clair Township, Precinct 2 | 563 | 1,662 | 40 | 2,265 | 24.9% | 73.4% | R+48.5 |
| Precinct -City of Marine City, Precinct 1City of Marine City, Precinct 1 | 796 | 1,432 | 31 | 2,259 | 35.2% | 63.4% | R+28.2 |
| Precinct -Riley Township, Precinct 1Riley Township, Precinct 1 | 461 | 1,749 | 31 | 2,241 | 20.6% | 78.0% | R+57.5 |
| Precinct -Berlin Township, Precinct 1Berlin Township, Precinct 1 | 428 | 1,677 | 21 | 2,126 | 20.1% | 78.9% | R+58.7 |
| Precinct -Wales Township, Precinct 1Wales Township, Precinct 1 | 456 | 1,546 | 36 | 2,038 | 22.4% | 75.9% | R+53.5 |
| Precinct -Fort Gratiot Township, Precinct 1Fort Gratiot Township, Precinct 1 | 822 | 1,011 | 25 | 1,858 | 44.2% | 54.4% | R+10.2 |
| Precinct -City of St. Clair, Precinct 1City of St. Clair, Precinct 1 | 626 | 1,191 | 27 | 1,844 | 33.9% | 64.6% | R+30.6 |
| Precinct -City of Marysville, Precinct 4City of Marysville, Precinct 4 | 654 | 1,078 | 19 | 1,751 | 37.4% | 61.6% | R+24.2 |
| Precinct -Fort Gratiot Township, Precinct 2Fort Gratiot Township, Precinct 2 | 585 | 1,089 | 28 | 1,702 | 34.4% | 64.0% | R+29.6 |
| Precinct -Emmett Township, Precinct 1Emmett Township, Precinct 1 | 395 | 1,258 | 19 | 1,672 | 23.6% | 75.2% | R+51.6 |
| Precinct -Kimball Township, Precinct 4Kimball Township, Precinct 4 | 438 | 1,212 | 21 | 1,671 | 26.2% | 72.5% | R+46.3 |
| Precinct -Ira Township, Precinct 2Ira Township, Precinct 2 | 365 | 1,284 | 17 | 1,666 | 21.9% | 77.1% | R+55.2 |
| Precinct -Columbus Township, Precinct 1Columbus Township, Precinct 1 | 312 | 1,299 | 13 | 1,624 | 19.2% | 80.0% | R+60.8 |
| Precinct -Kenockee Township, Precinct 1Kenockee Township, Precinct 1 | 366 | 1,229 | 10 | 1,605 | 22.8% | 76.6% | R+53.8 |
| Precinct -Port Huron Township, Precinct 1Port Huron Township, Precinct 1 | 549 | 1,020 | 19 | 1,588 | 34.6% | 64.2% | R+29.7 |
| Precinct -Port Huron Township, Precinct 2Port Huron Township, Precinct 2 | 520 | 1,008 | 21 | 1,549 | 33.6% | 65.1% | R+31.5 |
| Precinct -City of Port Huron, Precinct 3City of Port Huron, Precinct 3 | 665 | 852 | 26 | 1,543 | 43.1% | 55.2% | R+12.1 |
| Precinct -Kimball Township, Precinct 1Kimball Township, Precinct 1 | 440 | 1,019 | 34 | 1,493 | 29.5% | 68.3% | R+38.8 |
| Precinct -City of Port Huron, Precinct 2City of Port Huron, Precinct 2 | 704 | 762 | 19 | 1,485 | 47.4% | 51.3% | R+3.9 |
| Precinct -City of Port Huron, Precinct 1City of Port Huron, Precinct 1 | 727 | 716 | 29 | 1,472 | 49.4% | 48.6% | D+0.7 |
| Precinct -City of Port Huron, Precinct 9City of Port Huron, Precinct 9 | 672 | 732 | 23 | 1,427 | 47.1% | 51.3% | R+4.2 |
| Precinct -Ira Township, Precinct 1Ira Township, Precinct 1 | 441 | 968 | 16 | 1,425 | 30.9% | 67.9% | R+37.0 |
| Precinct -City of Marysville, Precinct 3City of Marysville, Precinct 3 | 500 | 901 | 19 | 1,420 | 35.2% | 63.5% | R+28.2 |
| Precinct -China Township, Precinct 1China Township, Precinct 1 | 433 | 949 | 15 | 1,397 | 31.0% | 67.9% | R+36.9 |
| Precinct -Kimball Township, Precinct 2Kimball Township, Precinct 2 | 445 | 929 | 20 | 1,394 | 31.9% | 66.6% | R+34.7 |
| Precinct -City of Port Huron, Precinct 8City of Port Huron, Precinct 8 | 617 | 735 | 29 | 1,381 | 44.7% | 53.2% | R+8.5 |
| Precinct -City of St. Clair, Precinct 2City of St. Clair, Precinct 2 | 579 | 756 | 31 | 1,366 | 42.4% | 55.3% | R+13.0 |
| Precinct -City of Port Huron, Precinct 4City of Port Huron, Precinct 4 | 588 | 752 | 25 | 1,365 | 43.1% | 55.1% | R+12.0 |
| Precinct -City of Algonac, Precinct 2City of Algonac, Precinct 2 | 354 | 975 | 23 | 1,352 | 26.2% | 72.1% | R+45.9 |
| Precinct -Fort Gratiot Township, Precinct 3Fort Gratiot Township, Precinct 3 | 545 | 751 | 22 | 1,318 | 41.4% | 57.0% | R+15.6 |
| Precinct -Casco Township, Precinct 2Casco Township, Precinct 2 | 295 | 1,005 | 13 | 1,313 | 22.5% | 76.5% | R+54.1 |
| Precinct -City of Port Huron, Precinct 6City of Port Huron, Precinct 6 | 607 | 677 | 27 | 1,311 | 46.3% | 51.6% | R+5.3 |
| Precinct -Clyde Township, Precinct 2Clyde Township, Precinct 2 | 342 | 950 | 17 | 1,309 | 26.1% | 72.6% | R+46.4 |
| Precinct -City of Marysville, Precinct 2City of Marysville, Precinct 2 | 463 | 781 | 24 | 1,268 | 36.5% | 61.6% | R+25.1 |
| Precinct -Burtchville Township, Precinct 3Burtchville Township, Precinct 3 | 516 | 726 | 19 | 1,261 | 40.9% | 57.6% | R+16.7 |
| Precinct -Brockway Township, Precinct 1Brockway Township, Precinct 1 | 251 | 975 | 9 | 1,235 | 20.3% | 78.9% | R+58.6 |
| Precinct -Casco Township, Precinct 1Casco Township, Precinct 1 | 305 | 896 | 25 | 1,226 | 24.9% | 73.1% | R+48.2 |
| Precinct -Kimball Township, Precinct 3Kimball Township, Precinct 3 | 315 | 885 | 12 | 1,212 | 26.0% | 73.0% | R+47.0 |
| Precinct -Grant Township, Precinct 1Grant Township, Precinct 1 | 299 | 887 | 19 | 1,205 | 24.8% | 73.6% | R+48.8 |
| Precinct -Burtchville Township, Precinct 2Burtchville Township, Precinct 2 | 415 | 765 | 21 | 1,201 | 34.6% | 63.7% | R+29.1 |
| Precinct -City of Marysville, Precinct 1City of Marysville, Precinct 1 | 416 | 719 | 18 | 1,153 | 36.1% | 62.4% | R+26.3 |
| Precinct -Columbus Township, Precinct 3Columbus Township, Precinct 3 | 284 | 848 | 19 | 1,151 | 24.7% | 73.7% | R+49.0 |
| Precinct -City of Port Huron, Precinct 10City of Port Huron, Precinct 10 | 634 | 493 | 20 | 1,147 | 55.3% | 43.0% | D+12.3 |
| Precinct -Port Huron Township, Precinct 3Port Huron Township, Precinct 3 | 411 | 717 | 17 | 1,145 | 35.9% | 62.6% | R+26.7 |
| Precinct -City of Algonac, Precinct 1City of Algonac, Precinct 1 | 329 | 786 | 12 | 1,127 | 29.2% | 69.7% | R+40.6 |
| Precinct -City of St. Clair, Precinct 3City of St. Clair, Precinct 3 | 394 | 698 | 25 | 1,117 | 35.3% | 62.5% | R+27.2 |
| Precinct -City of Port Huron, Precinct 5City of Port Huron, Precinct 5 | 524 | 564 | 21 | 1,109 | 47.2% | 50.9% | R+3.6 |
| Precinct -Port Huron Township, Precinct 4Port Huron Township, Precinct 4 | 441 | 604 | 26 | 1,071 | 41.2% | 56.4% | R+15.2 |
| Precinct -China Township, Precinct 2China Township, Precinct 2 | 272 | 765 | 21 | 1,058 | 25.7% | 72.3% | R+46.6 |
| Precinct -City of Port Huron, Precinct 7City of Port Huron, Precinct 7 | 517 | 515 | 23 | 1,055 | 49.0% | 48.8% | D+0.2 |
| Precinct -City of Yale, Precinct 1City of Yale, Precinct 1 | 304 | 652 | 15 | 971 | 31.3% | 67.1% | R+35.8 |
| Precinct -Greenwood Township, Precinct 1Greenwood Township, Precinct 1 | 231 | 718 | 14 | 963 | 24.0% | 74.6% | R+50.6 |
| Precinct -Clay Township, Precinct 4Clay Township, Precinct 4 | 226 | 581 | 11 | 818 | 27.6% | 71.0% | R+43.4 |
| Precinct -Lynn Township, Precinct 1Lynn Township, Precinct 1 | 168 | 583 | 15 | 766 | 21.9% | 76.1% | R+54.2 |
| Precinct -City of Memphis, Precinct 2City of Memphis, Precinct 2 | 56 | 143 | 1 | 200 | 28.0% | 71.5% | R+43.5 |
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presidential history
Presidential margin, 1892–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1892 | −1.1% |
| 1896 | −16.1% |
| 1900 | −25.0% |
| 1904 | −42.0% |
| 1908 | −30.2% |
| 1912 | +0.5% |
| 1916 | −16.9% |
| 1920 | −36.5% |
| 1924 | −39.3% |
| 1928 | −43.4% |
| 1932 | −7.5% |
| 1936 | −0.3% |
| 1940 | −20.6% |
| 1944 | −23.7% |
| 1948 | −25.0% |
| 1952 | −38.8% |
| 1956 | −39.0% |
| 1960 | −19.7% |
| 1964 | +18.3% |
| 1968 | −11.3% |
| 1972 | −28.3% |
| 1976 | −7.2% |
| 1980 | −19.0% |
| 1984 | −35.8% |
| 1988 | −21.3% |
| 1992 | −1.7% |
| 1996 | +10.6% |
| 2000 | −0.8% |
| 2004 | −8.2% |
| 2008 | +2.6% |
| 2012 | −7.1% |
| 2016 | −31.4% |
| 2020 | −30.2% |
| 2024 | −34.6% |
DemocraticRepublican
Congressional elections · 3 Senate races
U.S. Senate
voter registration
Registered voters
Total registered voters, over time
Registered voters
| Year | Total registered |
|---|---|
| 2016 | 124,354 |
| 2018 | 124,000 |
| 2020 | 134,617 |
| 2022 | 136,597 |
| 2024 | 140,061 |
domestic migration
Who moves in and out
Net migration over time, and who arrivals are — where they came from and what those places vote
+584 net domestic migration · 2025
20112025
Net +232 over 2011–2025 · gain loss
Arrivals reported $58,163 in average income, against $72,509 for residents who stayed — 20% lower. (IRS SOI, 2022–23)
The places arrivals came from lean R+11.2 on average — 23 points more Democratic-leaning than St. Clair County, MI itself (R+34.6).
Where arrivals came from lean of each source
- Macomb County, MI1,331R+13.7
- Oakland County, MI239D+10.6
- Sanilac County, MI204R+47.7
- Wayne County, MI152D+29.0
- Lapeer County, MI120R+39.8
- Genesee County, MI51D+4.2
Where departures went households, 2022–23
- Macomb County, MI1,038
- Oakland County, MI269
- Sanilac County, MI217
- Wayne County, MI138
- Lapeer County, MI103
- Genesee County, MI64
Migration is one input to a place’s political change, not its cause — a shift can also come from residents changing their minds, generational turnover, or turnout. These figures describe the places people moved between; they do not measure how any mover voted.
| Year | Net domestic migration |
|---|---|
| 2011 | −1,169 |
| 2012 | −1,104 |
| 2013 | −289 |
| 2014 | −117 |
| 2015 | −169 |
| 2016 | −136 |
| 2017 | −94 |
| 2018 | +293 |
| 2019 | +403 |
| 2021 | +491 |
| 2022 | +395 |
| 2023 | +784 |
| 2024 | +360 |
| 2025 | +584 |
St. Clair County's R+34.6 margin in 2024 reflects a blue-collar lakeside corridor that has moved steadily away from its mid-century Democratic roots, driven by deindustrialization along the Port Huron waterfront and an aging, predominantly white electorate.
Across the recorded series it reached a Democratic high of 18.3 points in 1964 and a Republican high of 43.4 points in 1928. Between 2020 and 2024 the county moved 4.4 points toward the Republican candidate; the 2024 margin was 34.6 points.
A population of 160,221, a 90% non-Hispanic-white share, and a median household income of $71,270 describe the county. The county's voting pattern over the last decade is most similar to that of Lapeer County and Monroe County.
Political twins — counties
The counties whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Lapeer County
Michigan
93.3twin score
12-yr trendelasticity% White≠ Polish ancestry
Monroe County
Michigan
89.7twin score
12-yr trendPolish ancestrypopulation scale
Tuscola County
Michigan
88.2twin score
12-yr trendPolish ancestry2004–2008 trajectory≠ Italian ancestry
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.
Browse places by community — income, education, race & ethnicity, language — all community cuts →
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. Clair County, Michigan. Akashic. https://akashic.app/county/26147/. Accessed May 20, 2026. License: CC BY 4.0.
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Cities & towns in St. Clair County
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Frequently asked questions
How did St. Clair County, Michigan vote in 2024?
In 2024, St. Clair County, Michigan voted Republican by 34.6 points (R+34.6), carried by the Republican candidate. Out of 96,524 votes cast, 30,844 went Democratic and 64,277 went Republican.
When did St. Clair County, Michigan last vote Democratic?
The most recent presidential election in which St. Clair County, Michigan voted Democratic was 2008.
How many people live in St. Clair County, Michigan?
St. Clair County, Michigan has a population of 160,221 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in St. Clair County, Michigan?
Median household income in St. Clair County, Michigan is $71,270 — below the national median of $80,734. The Michigan state median is $72,875.
What is the political history of St. Clair County, Michigan?
Akashic tracks 38 presidential elections in St. Clair County, Michigan from 1876 to 2024. Of those, 3 went Democratic and 30 went Republican.