Data / Rankings / Population aged 18 to 64 / Counties in Michigan

Counties in Michigan by population aged 18 to 64

Washtenaw County had the highest population aged 18 to 64 of 83 counties in 2023, at 65.6%. Keweenaw County had the lowest, at 48.6%. The median was 56.7% and the figure for Michigan was 59.6%. Source: the U.S. Census Bureau.

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Highest65.6Washtenaw County
Lowest48.6Keweenaw County
Median56.783 counties
Michigan59.6History

Map of counties, 2023

Alcona County: 50.5 %Alger County: 57.3 %Allegan County: 57.6 %Alpena County: 54.9 %Antrim County: 54.1 %Arenac County: 53.5 %Baraga County: 57.9 %Barry County: 57.7 %Bay County: 57.9 %Benzie County: 53.7 %Berrien County: 56.3 %Branch County: 56 %Calhoun County: 58 %Cass County: 56.7 %Charlevoix County: 54.1 %Cheboygan County: 54.7 %Chippewa County: 61 %Clare County: 54.3 %Clinton County: 59 %Crawford County: 54.6 %Delta County: 54.5 %Dickinson County: 55 %Eaton County: 58.1 %Emmet County: 55.6 %Genesee County: 58.7 %Gladwin County: 53 %Gogebic County: 53.8 %Grand Traverse County: 57.4 %Gratiot County: 63.9 %Hillsdale County: 55.9 %Houghton County: 61.5 %Huron County: 53.3 %Ingham County: 64.8 %Ionia County: 61.8 %Iosco County: 51.3 %Iron County: 51.1 %Isabella County: 64.7 %Jackson County: 59.1 %Kalamazoo County: 61.1 %Kalkaska County: 57.1 %Kent County: 61.1 %Keweenaw County: 48.6 %Lake County: 57.7 %Lapeer County: 58.9 %Leelanau County: 49.5 %Lenawee County: 57.7 %Livingston County: 59.1 %Luce County: 61 %Mackinac County: 52.8 %Macomb County: 60.7 %Manistee County: 54.8 %Marquette County: 60.8 %Mason County: 54.1 %Mecosta County: 59.4 %Menominee County: 54.5 %Midland County: 57.7 %Missaukee County: 55 %Monroe County: 59 %Montcalm County: 60.5 %Montmorency County: 51.2 %Muskegon County: 58.3 %Newaygo County: 56.7 %Oakland County: 60.8 %Oceana County: 55.4 %Ogemaw County: 53.4 %Ontonagon County: 49.6 %Osceola County: 54.7 %Oscoda County: 49.9 %Otsego County: 56.4 %Ottawa County: 59.9 %Presque Isle County: 49.9 %Roscommon County: 51.6 %Saginaw County: 58 %St. Clair County: 58.7 %St. Joseph County: 56.4 %Sanilac County: 55.4 %Schoolcraft County: 52.1 %Shiawassee County: 58.1 %Tuscola County: 56.9 %Van Buren County: 56.3 %Washtenaw County: 65.6 %Wayne County: 60 %Wexford County: 55.7 %
  • Under 53
  • 53 to 55
  • 55 to 57
  • 57 to 58
  • 58 to 60
  • 60 and over
%, 2023. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2023

Washtenaw County: 65.6 %Washtenaw County65.6Ingham County: 64.8 %Ingham County64.8Isabella County: 64.7 %Isabella County64.7Gratiot County: 63.9 %Gratiot County63.9Ionia County: 61.8 %Ionia County61.8Houghton County: 61.5 %Houghton County61.5Kent County: 61.1 %Kent County61.1Kalamazoo County: 61.1 %Kalamazoo County61.1Luce County: 61 %Luce County61Chippewa County: 61 %Chippewa County61Marquette County: 60.8 %Marquette County60.8Oakland County: 60.8 %Oakland County60.8Macomb County: 60.7 %Macomb County60.7Montcalm County: 60.5 %Montcalm County60.5Wayne County: 60 %Wayne County60Ottawa County: 59.9 %Ottawa County59.9Mecosta County: 59.4 %Mecosta County59.4Livingston County: 59.1 %Livingston County59.1Jackson County: 59.1 %Jackson County59.1Monroe County: 59 %Monroe County59Clinton County: 59 %Clinton County59Lapeer County: 58.9 %Lapeer County58.9St. Clair County: 58.7 %St. Clair County58.7Genesee County: 58.7 %Genesee County58.7Muskegon County: 58.3 %Muskegon County58.3Shiawassee County: 58.1 %Shiawassee County58.1Eaton County: 58.1 %Eaton County58.1Calhoun County: 58 %Calhoun County58Saginaw County: 58 %Saginaw County58Bay County: 57.9 %Bay County57.9Baraga County: 57.9 %Baraga County57.9Lake County: 57.7 %Lake County57.7Barry County: 57.7 %Barry County57.7Lenawee County: 57.7 %Lenawee County57.7Midland County: 57.7 %Midland County57.7Allegan County: 57.6 %Allegan County57.6Grand Traverse County: 57.4 %Grand Traverse County57.4Alger County: 57.3 %Alger County57.3Kalkaska County: 57.1 %Kalkaska County57.1Tuscola County: 56.9 %Tuscola County56.9Washtenaw County: 65.6 %Washtenaw County65.6Ingham County: 64.8 %Ingham County64.8Isabella County: 64.7 %Isabella County64.7Gratiot County: 63.9 %Gratiot County63.9Ionia County: 61.8 %Ionia County61.8Houghton County: 61.5 %Houghton County61.5Kent County: 61.1 %Kent County61.1Kalamazoo County: 61.1 %Kalamazoo County61.1Luce County: 61 %Luce County61Chippewa County: 61 %Chippewa County61Marquette County: 60.8 %Marquette County60.8Oakland County: 60.8 %Oakland County60.8Macomb County: 60.7 %Macomb County60.7Montcalm County: 60.5 %Montcalm County60.5Wayne County: 60 %Wayne County60Ottawa County: 59.9 %Ottawa County59.9Mecosta County: 59.4 %Mecosta County59.4Livingston County: 59.1 %Livingston County59.1Jackson County: 59.1 %Jackson County59.1Monroe County: 59 %Monroe County59Clinton County: 59 %Clinton County59Lapeer County: 58.9 %Lapeer County58.9St. Clair County: 58.7 %St. Clair County58.7Genesee County: 58.7 %Genesee County58.7Muskegon County: 58.3 %Muskegon County58.3Shiawassee County: 58.1 %Shiawassee County58.1Eaton County: 58.1 %Eaton County58.1Calhoun County: 58 %Calhoun County58Saginaw County: 58 %Saginaw County58Bay County: 57.9 %Bay County57.9Baraga County: 57.9 %Baraga County57.9Lake County: 57.7 %Lake County57.7Barry County: 57.7 %Barry County57.7Lenawee County: 57.7 %Lenawee County57.7Midland County: 57.7 %Midland County57.7Allegan County: 57.6 %Allegan County57.6Grand Traverse County: 57.4 %Grand Traverse County57.4Alger County: 57.3 %Alger County57.3Kalkaska County: 57.1 %Kalkaska County57.1Tuscola County: 56.9 %Tuscola County56.9
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2023 (%)Change on 2022
1Washtenaw County65.6-0.3 pts
2Ingham County64.8-0.1 pts
3Isabella County64.7-0.3 pts
4Gratiot County63.9+1.2 pts
5Ionia County61.8-0.5 pts
6Houghton County61.5-0.2 pts
7Kent County61.1-0.2 pts
8Kalamazoo County61.1-0.1 pts
9Luce County61+1.1 pts
10Chippewa County61-0.2 pts
11Marquette County60.8-0 pts
12Oakland County60.8-0.4 pts
13Macomb County60.7-0.3 pts
14Montcalm County60.5+0.2 pts
15Wayne County60-0.3 pts
16Ottawa County59.9-0.1 pts
17Mecosta County59.4-0.3 pts
18Livingston County59.1-0.5 pts
19Jackson County59.1-0.3 pts
20Monroe County59-0.4 pts
21Clinton County59-0.1 pts
22Lapeer County58.9-0.2 pts
23St. Clair County58.7-0.4 pts
24Genesee County58.7-0.3 pts
25Muskegon County58.3-0.2 pts
26Shiawassee County58.1-0.6 pts
27Eaton County58.1-0.5 pts
28Calhoun County58-0.2 pts
29Saginaw County58-0.1 pts
30Bay County57.9-0.5 pts
31Baraga County57.9-0.1 pts
32Lake County57.7+0.1 pts
33Barry County57.7-0.3 pts
34Lenawee County57.7-0.8 pts
35Midland County57.7-0.4 pts
36Allegan County57.6-0.3 pts
37Grand Traverse County57.4-0.5 pts
38Alger County57.3-0.3 pts
39Kalkaska County57.1-0.1 pts
40Tuscola County56.9-0.4 pts
41Cass County56.7-0.2 pts
42Newaygo County56.7-0.2 pts
43Otsego County56.4-0.4 pts
43St. Joseph County56.4-0.2 pts
45Berrien County56.3-0.4 pts
46Van Buren County56.3-0.5 pts
47Branch County56-0.1 pts
48Hillsdale County55.9-0.5 pts
49Wexford County55.7-0.3 pts
50Emmet County55.6-0.5 pts
51Sanilac County55.4-0.4 pts
52Oceana County55.4-0.3 pts
53Dickinson County55-0.5 pts
54Missaukee County55-0.2 pts
55Alpena County54.9-0.6 pts
56Manistee County54.8-0.6 pts
57Osceola County54.7-0.3 pts
58Cheboygan County54.7-0.2 pts
59Crawford County54.6-0.5 pts
60Delta County54.5-0.4 pts
61Menominee County54.5-0.7 pts
62Clare County54.3-0.6 pts
63Charlevoix County54.1-0.7 pts
64Mason County54.1-0.1 pts
65Antrim County54.1-0.4 pts
66Gogebic County53.8-1 pts
67Benzie County53.7-0.8 pts
68Arenac County53.5-0.4 pts
69Ogemaw County53.4-0.5 pts
70Huron County53.3-0.7 pts
71Gladwin County53-0.3 pts
72Mackinac County52.8-0.3 pts
73Schoolcraft County52.1-0.8 pts
74Roscommon County51.6-0.5 pts
75Iosco County51.3-1 pts
76Montmorency County51.2-0.4 pts
77Iron County51.1-0.6 pts
78Alcona County50.5-0.6 pts
79Oscoda County49.9-0.8 pts
80Presque Isle County49.9-0.6 pts
81Ontonagon County49.6-1.1 pts
82Leelanau County49.5-0.5 pts
83Keweenaw County48.6-0.7 pts

Other periods

About this ranking

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.

Not comparable with working-age shares for ages 15 to 64 used in EU and World Bank statistics.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

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 styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). 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 (Counties in Michigan by population aged 18 to 64, 2023) [Data set]. Retrieved October 12, 2026, from https://www.census.gov/programs-surveys/popest/data/data-sets.html

MLA 9

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, Counties in Michigan by population aged 18 to 64, 2023. U.S. Census Bureau, 25 June 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/rankings/population-18-64/michigan-counties?period=2023. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. 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. Counties in Michigan by population aged 18 to 64, 2023. Dataset. Accessed October 12, 2026. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Also distributed by Invokely, https://invokely.ai/rankings/population-18-64/michigan-counties?period=2023.

Harvard

U.S. Census Bureau (2026) 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, Counties in Michigan by population aged 18 to 64, 2023 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/population-18-64/michigan-counties?period=2023 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_michigan_by_2023,
  author = {{U.S. Census Bureau}},
  title = {{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: Counties in Michigan by population aged 18 to 64, 2023}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www.census.gov/programs-surveys/popest/data/data-sets.html},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/population-18-64/michigan-counties?period=2023. Publisher attribution: 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.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - 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: Counties in Michigan by population aged 18 to 64, 2023
PY  - 2026
DA  - 2026/06/25
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www.census.gov/programs-surveys/popest/data/data-sets.html
L2  - https://invokely.ai/rankings/population-18-64/michigan-counties?period=2023
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-18-64/michigan-counties?period=2023.
N1  - Publisher attribution: 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.
ER  -
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Rank Counties in Michigan by population aged 18 to 64 using official data, and cite the source.
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Questions

Which county has the highest population aged 18 to 64?

Washtenaw County, with 65.6% in 2023, according to the U.S. Census Bureau.

Which county has the lowest population aged 18 to 64?

Keweenaw County, with 48.6% in 2023.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: 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. Retrieved 2026-10-12.

Population aged 18 to 64: other rankings

Counties in Michigan: more rankings