Washtenaw County, Michigan: Diversifying Metro county. In 2024, voted D+44%. Republican peak: R+57 in 1928.
Key facts
- 2024 presidential margin
- D+44MIT Election Lab
- Political typology
- Diversifying MetroAkashic typology
- Population
- 369,8222024 5-year
- Median household income
- $89,1802024 5-year
- White (non-Hispanic)
- 68.7%2024 5-year
- Black
- 11.5%2024 5-year
- Hispanic / Latino
- 5.8%2024 5-year
- Peak Democratic margin
- D+47 in 2020MIT Election Lab
- Peak Republican margin
- R+57 in 1928MIT Election Lab
- Most similar
- King County, WA · similarity 1.00
2024 results by precinct
2024 precinct map of Washtenaw CountyPrecinct-level 2024 presidential results for Washtenaw County, with each precinct boundary colored by Democratic-vs-Republican margin.
—
Margin—
Turnout—
Harris +50Trump +50
Real precinct boundaries. Hover for vote totals.
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 | +11.0% |
| 1896 | −2.8% |
| 1900 | −2.8% |
| 1904 | −26.3% |
| 1908 | −13.1% |
| 1912 | +15.8% |
| 1916 | −10.2% |
| 1920 | −50.8% |
| 1924 | −54.1% |
| 1928 | −57.3% |
| 1932 | −9.7% |
| 1936 | −4.7% |
| 1940 | −29.2% |
| 1944 | −24.6% |
| 1948 | −30.8% |
| 1952 | −33.8% |
| 1956 | −34.0% |
| 1960 | −22.3% |
| 1964 | +24.3% |
| 1968 | −4.3% |
| 1972 | +4.5% |
| 1976 | −5.3% |
| 1980 | +2.0% |
| 1984 | −3.2% |
| 1988 | +5.7% |
| 1992 | +23.2% |
| 1996 | +26.6% |
| 2000 | +23.6% |
| 2004 | +28.0% |
| 2008 | +41.0% |
| 2012 | +35.8% |
| 2016 | +41.0% |
| 2020 | +46.6% |
| 2024 | +44.2% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| D | 157,152 | 58,844 | 222,169 | ||
| D | 157,136 | 56,241 | 216,418 | ||
| D | 128,483 | 50,631 | 190,079 | ||
| D | 120,890 | 56,412 | 180,337 | ||
| D | 130,578 | 53,946 | 187,115 | ||
| D | 109,953 | 61,455 | 173,264 | ||
| D | 86,647 | 52,459 | 144,940 | ||
| D | 73,106 | 40,097 | 124,028 | ||
| D | 73,325 | 41,386 | 137,466 | ||
| D | 61,799 | 55,029 | 117,920 | ||
| R | 55,084 | 58,736 | 114,569 | ||
| D | 51,013 | 48,699 | 116,179 | ||
| R | 50,917 | 56,807 | 111,689 | ||
| D | 55,350 | 50,535 | 107,575 | ||
| R | 33,073 | 36,432 | 77,814 | ||
| D | 42,089 | 25,595 | 67,890 | ||
| R | 25,129 | 39,632 | 64,986 | ||
| R | 19,124 | 38,911 | 58,176 | ||
| R | 17,671 | 35,826 | 53,759 | ||
| R | 12,721 | 24,588 | 38,567 | ||
| R | 14,922 | 24,740 | 39,906 | ||
| R | 11,802 | 21,664 | 33,719 | ||
| R | 13,589 | 14,986 | 29,510 | ||
| R | 12,552 | 15,368 | 29,100 | ||
| R | 5,308 | 19,676 | 25,093 | ||
| R | 3,603 | 14,326 | 19,830 | ||
| R | 4,468 | 14,082 | 18,912 | ||
| R | 5,279 | 6,505 | 12,026 | ||
| D | 4,164 | 2,495 | 10,556 | ||
| R | 4,441 | 5,845 | 10,709 | ||
| R | 3,779 | 6,566 | 10,583 | ||
| R | 5,072 | 5,369 | 10,716 | ||
| R | 5,348 | 5,671 | 11,403 | ||
| D | 5,508 | 4,362 | 10,388 | ||
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Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
17.3%
English
11.5%
Irish
10.2%
Polish
6.2%
American
4.6%
Italian
4.5%
Scottish
2.8%
African American
9.2%
Multiple ancestry combinations reported; no single grouping above 1%.
American Indian, Alaska Native, Native Hawaiian, and Pacific Islander combined.
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: 35.0 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
$89,180
Washtenaw County ranks in the top 10% of US counties.
Washtenaw County$89,180
Michigan$72,875
United States$80,734
Washtenaw County ranks in the top 10% of US counties by median household income.
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Poverty rate
All persons below federal poverty line
14.2%
Child poverty is below the national average.
Children under 1812.3%
Working age (18–64)15.3%
Seniors (65+)6.5%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
84.3%
speak English only
Asian & Pacific Islander5.8%
Other Indo-European4.5%
Spanish3.4%
Other languages2.0%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 68.2% of residents not counted as adherents by any reporting body.
Home to the University of Michigan in Ann Arbor, Washtenaw delivers some of the largest Democratic margins in the state, with college-educated voters and university employees forming the demographic backbone of its political tilt.
The Democratic margin here reached forty-seven points in 2020. Between 2020 and 2024 the county moved two points toward the Republican candidate; the 2024 margin was forty-four points.
A population of 369,822, a 69% non-Hispanic-white share, and a median household income of $89,180 describe the county. The county's voting pattern over the last decade is most similar to that of King County and Richmond city.
Most similar counties
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.
Washtenaw County, Michigan. Akashic. https://akashic.app/county/26161/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
More diversifying metro counties
Frequently asked questions
How did Washtenaw County, Michigan vote in 2024?
In 2024, Washtenaw County, Michigan voted Democratic by 44.2 points (D+44), carried by the Democratic candidate. Out of 222,169 votes cast, 157,152 went Democratic and 58,844 went Republican.
What is Washtenaw County, Michigan's political typology?
Akashic places Washtenaw County, Michigan in the "Diversifying Metro" typology — Mid-size metropolitan counties growing more diverse and trending Democratic. 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 county has voted Democratic 15 times, Republican 19 times, and other 0 times.
When did Washtenaw County, Michigan last vote Republican?
The most recent presidential election in which Washtenaw County, Michigan voted Republican was 1984.
How many people live in Washtenaw County, Michigan?
Washtenaw County, Michigan has a population of 369,822 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Washtenaw County, Michigan?
Median household income in Washtenaw County, Michigan is $89,180 — above the national median of $80,734. The Michigan state median is $72,875.
What is the political history of Washtenaw County, Michigan?
Akashic tracks 38 presidential elections in Washtenaw County, Michigan from 1876 to 2024. Of those, 15 went Democratic and 19 went Republican. The county's typology — "Diversifying Metro" — captures where that record, its demographics, and its recent swing place it among American communities.