# Counties in Michigan by population aged 18 to 64, 2025

All 83 values come from U.S. Census Bureau for 2025, so the places are comparable.

- Indicator id: `population_18_64_share`
- Unit: %
- Definition: Residents aged 18 to 64 as a percentage of total population on 1 July. United States: Census Bureau county population estimates by age; states and the nation are sums of their counties.
- Source: U.S. Census Bureau, Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties (https://www.census.gov/programs-surveys/popest/data/data-sets.html)
- Retrieved: 2026-10-12
- Citation: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 18 to 64 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.
- Web page: https://invokely.ai/rankings/population-18-64/michigan-counties

| Rank | Place | % |
|---:|---|---:|
| 1 | Gratiot County | 65.2 |
| 2 | Washtenaw County | 65.1 |
| 3 | Ingham County | 64.8 |
| 4 | Isabella County | 64.4 |
| 5 | Ionia County | 61.4 |
| 6 | Houghton County | 61.2 |
| 7 | Chippewa County | 61.1 |
| 8 | Kalamazoo County | 60.9 |
| 9 | Kent County | 60.9 |
| 10 | Marquette County | 60.6 |
| 11 | Luce County | 60.4 |
| 12 | Oakland County | 60.3 |
| 13 | Macomb County | 60.1 |
| 14 | Montcalm County | 60 |
| 15 | Ottawa County | 59.7 |
| 16 | Wayne County | 59.6 |
| 17 | Clinton County | 58.7 |
| 18 | Mecosta County | 58.6 |
| 19 | Monroe County | 58.4 |
| 20 | Genesee County | 58.4 |
| 21 | Jackson County | 58.3 |
| 22 | Livingston County | 58 |
| 23 | Muskegon County | 58 |
| 24 | Calhoun County | 58 |
| 25 | St. Clair County | 58 |
| 26 | Lapeer County | 58 |
| 27 | Saginaw County | 57.9 |
| 28 | Eaton County | 57.7 |
| 29 | Shiawassee County | 57.6 |
| 30 | Allegan County | 57.3 |
| 31 | Barry County | 57.3 |
| 32 | Lenawee County | 57.2 |
| 33 | Bay County | 57.2 |
| 34 | Midland County | 57 |
| 35 | Lake County | 56.6 |
| 36 | Kalkaska County | 56.5 |
| 37 | Grand Traverse County | 56.4 |
| 38 | Tuscola County | 56.3 |
| 39 | Otsego County | 56.2 |
| 40 | Baraga County | 56.2 |
| 41 | Cass County | 56 |
| 42 | Newaygo County | 56 |
| 43 | St. Joseph County | 55.9 |
| 44 | Berrien County | 55.8 |
| 45 | Alger County | 55.8 |
| 46 | Van Buren County | 55.5 |
| 47 | Branch County | 55.4 |
| 48 | Hillsdale County | 55.4 |
| 49 | Wexford County | 55.4 |
| 50 | Missaukee County | 54.7 |
| 51 | Emmet County | 54.7 |
| 52 | Sanilac County | 54.5 |
| 53 | Oceana County | 54.5 |
| 54 | Dickinson County | 54.3 |
| 55 | Osceola County | 54.2 |
| 56 | Cheboygan County | 53.9 |
| 57 | Alpena County | 53.8 |
| 58 | Manistee County | 53.8 |
| 59 | Crawford County | 53.7 |
| 60 | Menominee County | 53.7 |
| 61 | Delta County | 53.7 |
| 62 | Clare County | 53.4 |
| 63 | Mason County | 53.3 |
| 64 | Antrim County | 53 |
| 65 | Gogebic County | 53 |
| 66 | Mackinac County | 52.9 |
| 67 | Benzie County | 52.7 |
| 68 | Charlevoix County | 52.5 |
| 69 | Arenac County | 52.4 |
| 70 | Gladwin County | 52.3 |
| 71 | Ogemaw County | 52.1 |
| 72 | Huron County | 52 |
| 73 | Schoolcraft County | 50.8 |
| 74 | Iosco County | 50 |
| 75 | Montmorency County | 50 |
| 76 | Iron County | 49.7 |
| 77 | Roscommon County | 49.7 |
| 78 | Alcona County | 49.5 |
| 79 | Ontonagon County | 48.9 |
| 80 | Presque Isle County | 48.6 |
| 81 | Leelanau County | 48.4 |
| 82 | Oscoda County | 48.1 |
| 83 | Keweenaw County | 46.9 |