Voter file loaded July 30, 2026 · figures are from that file, held as a fixed record
Jackson County, Michigan has 127,847 active registered voters across 56 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 | SUMMIT TOWNSHIP P5 | 2,095 | 1,233 | 58.85% |
| 2 | HENRIETTA TOWNSHIP P1 | 1,826 | 1,072 | 58.71% |
| 3 | HANOVER TOWNSHIP P1 | 1,326 | 778 | 58.67% |
| 4 | SUMMIT TOWNSHIP P2 | 2,591 | 1,504 | 58.05% |
| 5 | SUMMIT TOWNSHIP P4 | 2,236 | 1,294 | 57.87% |
| 6 | GRASS LAKE CHARTER TOWNSHIP P2 | 3,035 | 1,742 | 57.4% |
| 7 | GRASS LAKE CHARTER TOWNSHIP P1 | 2,297 | 1,304 | 56.77% |
| 8 | COLUMBIA CHARTER TOWNSHIP P2 | 1,716 | 968 | 56.41% |
| 9 | COLUMBIA CHARTER TOWNSHIP P3 | 2,601 | 1,466 | 56.36% |
| 10 | NORVELL TOWNSHIP P1 | 1,155 | 649 | 56.19% |
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 Jackson County voted for president
Election results are public records.
Jackson County at a glance.
Jackson County had an estimated 160,233 residents in July 2024, the 14th most populous of Michigan's 83 counties, down 0.1% since the 2020 census. Of those, 127,556 are 18 or older, the voting-age population, and 20.2% are 65 or older. Its 127,847 active registered voters equal about 100.2% of that voting-age population.
It covers 702 square miles of land (228 people per square mile). The largest towns and cities are Jackson (30,920), Blackman (25,499), Summit (22,809), Leoni (13,821) and Spring Arbor (8,534). The American Community Survey (2020-2024) puts it at a median age of 41.5, a median household income of $66,073, 23.4% of adults 25 and older holding a bachelor's degree or higher and 75.0% of occupied homes owned by the people living in them.
In 2024, 83,803 votes were cast for president, about 65.7% of the voting-age population; the Democratic ticket took 38.6% and the Republican ticket 59.9%. The two-party margin moved from D+2.4 in 2008 to R+21.3 in 2024.
- Population (2024 estimate)
- 160,233
- Population (2020 census base)
- 160,357
- Voting-age population (18+)
- 127,556
- Active voters per 100 adults
- 100.2
- Residents 65 and older
- 20.2%
- People per square mile
- 228
- Land area
- 702 sq mi
- Median age
- 41.5
- Median household income
- $66,073
- Adults 25+ with a bachelor's degree
- 23.4%
- Owner-occupied homes
- 75.0%
Largest towns and cities
- Jackson 30,920
- Blackman 25,499
- Summit 22,809
- Leoni 13,821
- Spring Arbor 8,534
Presidential vote, 2008–2024
| Year | Democratic | Republican | Margin | Votes cast |
|---|---|---|---|---|
| 2024 | 38.6% | 59.9% | R+21.3 | 83,803 |
| 2020 | 39.6% | 58.6% | R+19.0 | 80,861 |
| 2016 | 37.1% | 57.2% | R+20.1 | 69,567 |
| 2012 | 46.6% | 52.4% | R+5.8 | 69,323 |
| 2008 | 50.3% | 47.9% | D+2.4 | 74,503 |
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.
Running in Jackson County?
The voter file is loaded. Create your campaign and start canvassing in minutes.
Start free in Jackson CountyAlso see: Motion51 in Michigan · How to run for office in Jackson County · Pricing