Voter file loaded July 30, 2026 · figures are from that file, held as a fixed record
Washtenaw County, Michigan has 305,094 active registered voters across 112 precincts, as of August 2026.
Party registration
Michigan doesn't register voters by party, so there's no party breakdown to show. Party lean is usually inferred from primary participation; that data is in the voter file and available inside Motion51.
Most reliable-voting precincts
| # | Precinct | Active voters | Supervoters | Supervoter % |
|---|---|---|---|---|
| 1 | DEXTER CITY P2 | 1,452 | 969 | 66.74% |
| 2 | WEBSTER TOWNSHIP P2 | 2,977 | 1,986 | 66.71% |
| 3 | SCIO TOWNSHIP P2 | 3,390 | 2,208 | 65.13% |
| 4 | DEXTER TOWNSHIP P1 | 2,526 | 1,626 | 64.37% |
| 5 | SCIO TOWNSHIP P3 | 3,713 | 2,379 | 64.07% |
| 6 | LODI TOWNSHIP P1 | 4,134 | 2,648 | 64.05% |
| 7 | WEBSTER TOWNSHIP P1 | 2,833 | 1,809 | 63.85% |
| 8 | DEXTER TOWNSHIP P2 | 2,101 | 1,339 | 63.73% |
| 9 | SALINE CITY P1 | 3,474 | 2,211 | 63.64% |
| 10 | FREEDOM TOWNSHIP P1 | 1,291 | 819 | 63.44% |
Supervoters are active registered voters who cast a ballot in at least 3 of the last 4 November general elections (2018–2024). Percentages are precinct totals from the official state voter file — no individual voter information is shown. Precincts with fewer than 400 active voters are excluded.
How Washtenaw County voted for president
Election results are public records.
Washtenaw County at a glance.
Washtenaw County had an estimated 373,875 residents in July 2024, the sixth most populous of Michigan's 83 counties, up 0.4% since the 2020 census. Of those, 307,167 are 18 or older, the voting-age population, and 16.7% are 65 or older. Its 305,094 active registered voters equal about 99.3% of that voting-age population.
It covers 706 square miles of land (530 people per square mile). The largest towns and cities are Ann Arbor (122,925), Ypsilanti (54,760), Pittsfield (40,697), Ypsilanti (20,150) and Scio (18,522). The American Community Survey (2020-2024) puts it at a median age of 35.0, a median household income of $89,180, 58.7% of adults 25 and older holding a bachelor's degree or higher and 61.6% of occupied homes owned by the people living in them.
In 2024, 221,304 votes were cast for president, about 72.0% of the voting-age population; the Democratic ticket took 71.0% and the Republican ticket 26.6%. The two-party margin moved from D+41.0 in 2008 to D+44.4 in 2024.
- Population (2024 estimate)
- 373,875
- Population (2020 census base)
- 372,258
- Voting-age population (18+)
- 307,167
- Active voters per 100 adults
- 99.3
- Residents 65 and older
- 16.7%
- People per square mile
- 530
- Land area
- 706 sq mi
- Median age
- 35.0
- Median household income
- $89,180
- Adults 25+ with a bachelor's degree
- 58.7%
- Owner-occupied homes
- 61.6%
Largest towns and cities
- Ann Arbor 122,925
- Ypsilanti 54,760
- Pittsfield 40,697
- Ypsilanti 20,150
- Scio 18,522
Presidential vote, 2008–2024
| Year | Democratic | Republican | Margin | Votes cast |
|---|---|---|---|---|
| 2024 | 71.0% | 26.6% | D+44.4 | 221,304 |
| 2020 | 72.6% | 26.0% | D+46.6 | 216,418 |
| 2016 | 68.4% | 26.9% | D+41.5 | 187,201 |
| 2012 | 67.5% | 31.5% | D+36.0 | 179,016 |
| 2008 | 69.8% | 28.8% | D+41.0 | 187,115 |
Sources: U.S. Census Bureau Vintage 2024 population estimates and 2024 Gazetteer; American Community Survey 2020–2024 5-year estimates; certified county presidential returns. Growth, density and turnout are simple arithmetic on those figures.
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