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

Counties in Michigan by population aged 18 to 64

Isabella County had the highest population aged 18 to 64 of 83 counties in 2016, at 69.4%. Keweenaw County had the lowest, at 51.2%. The median was 59% and the figure for Michigan was 61.7%. Source: the U.S. Census Bureau.

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Highest69.4Isabella County
Lowest51.2Keweenaw County
Median5983 counties
Michigan61.7History

Map of counties, 2016

Alcona County: 51.7 %Alger County: 60.6 %Allegan County: 59.7 %Alpena County: 58.4 %Antrim County: 55.6 %Arenac County: 58.2 %Baraga County: 60.3 %Barry County: 59.3 %Bay County: 60.2 %Benzie County: 56.5 %Berrien County: 58.9 %Branch County: 58.5 %Calhoun County: 59.9 %Cass County: 59.3 %Charlevoix County: 57.2 %Cheboygan County: 56.4 %Chippewa County: 64.1 %Clare County: 57.5 %Clinton County: 60.9 %Crawford County: 56.6 %Delta County: 57.3 %Dickinson County: 58.9 %Eaton County: 60.8 %Emmet County: 58.8 %Genesee County: 60.6 %Gladwin County: 55 %Gogebic County: 60.1 %Grand Traverse County: 61.1 %Gratiot County: 61.4 %Hillsdale County: 59 %Houghton County: 63.4 %Huron County: 56.8 %Ingham County: 66.9 %Ionia County: 63.7 %Iosco County: 54.7 %Iron County: 54.8 %Isabella County: 69.4 %Jackson County: 61.4 %Kalamazoo County: 63.3 %Kalkaska County: 58.8 %Kent County: 62.5 %Keweenaw County: 51.2 %Lake County: 59.9 %Lapeer County: 61.3 %Leelanau County: 54.2 %Lenawee County: 60.5 %Livingston County: 61.8 %Luce County: 58.4 %Mackinac County: 56.7 %Macomb County: 62.6 %Manistee County: 58.4 %Marquette County: 63.5 %Mason County: 57.3 %Mecosta County: 61.7 %Menominee County: 58.3 %Midland County: 60.4 %Missaukee County: 56.8 %Monroe County: 61.4 %Montcalm County: 61.4 %Montmorency County: 54.4 %Muskegon County: 60.7 %Newaygo County: 58.8 %Oakland County: 62.6 %Oceana County: 56.4 %Ogemaw County: 56.7 %Ontonagon County: 53.9 %Osceola County: 56.4 %Oscoda County: 54.5 %Otsego County: 58.7 %Ottawa County: 61.4 %Presque Isle County: 53.7 %Roscommon County: 54.2 %Saginaw County: 59.8 %St. Clair County: 61 %St. Joseph County: 58.1 %Sanilac County: 57.9 %Schoolcraft County: 56.8 %Shiawassee County: 60.7 %Tuscola County: 59.2 %Van Buren County: 59.3 %Washtenaw County: 68.2 %Wayne County: 62 %Wexford County: 58.2 %
  • Under 56
  • 56 to 58
  • 58 to 59
  • 59 to 61
  • 61 to 62
  • 62 and over
%, 2016. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2016

Isabella County: 69.4 %Isabella County69.4Washtenaw County: 68.2 %Washtenaw County68.2Ingham County: 66.9 %Ingham County66.9Chippewa County: 64.1 %Chippewa County64.1Ionia County: 63.7 %Ionia County63.7Marquette County: 63.5 %Marquette County63.5Houghton County: 63.4 %Houghton County63.4Kalamazoo County: 63.3 %Kalamazoo County63.3Oakland County: 62.6 %Oakland County62.6Macomb County: 62.6 %Macomb County62.6Kent County: 62.5 %Kent County62.5Wayne County: 62 %Wayne County62Livingston County: 61.8 %Livingston County61.8Mecosta County: 61.7 %Mecosta County61.7Gratiot County: 61.4 %Gratiot County61.4Jackson County: 61.4 %Jackson County61.4Montcalm County: 61.4 %Montcalm County61.4Ottawa County: 61.4 %Ottawa County61.4Monroe County: 61.4 %Monroe County61.4Lapeer County: 61.3 %Lapeer County61.3Grand Traverse County: 61.1 %Grand Traverse County61.1St. Clair County: 61 %St. Clair County61Clinton County: 60.9 %Clinton County60.9Eaton County: 60.8 %Eaton County60.8Muskegon County: 60.7 %Muskegon County60.7Shiawassee County: 60.7 %Shiawassee County60.7Alger County: 60.6 %Alger County60.6Genesee County: 60.6 %Genesee County60.6Lenawee County: 60.5 %Lenawee County60.5Midland County: 60.4 %Midland County60.4Baraga County: 60.3 %Baraga County60.3Bay County: 60.2 %Bay County60.2Gogebic County: 60.1 %Gogebic County60.1Lake County: 59.9 %Lake County59.9Calhoun County: 59.9 %Calhoun County59.9Saginaw County: 59.8 %Saginaw County59.8Allegan County: 59.7 %Allegan County59.7Barry County: 59.3 %Barry County59.3Van Buren County: 59.3 %Van Buren County59.3Cass County: 59.3 %Cass County59.3Isabella County: 69.4 %Isabella County69.4Washtenaw County: 68.2 %Washtenaw County68.2Ingham County: 66.9 %Ingham County66.9Chippewa County: 64.1 %Chippewa County64.1Ionia County: 63.7 %Ionia County63.7Marquette County: 63.5 %Marquette County63.5Houghton County: 63.4 %Houghton County63.4Kalamazoo County: 63.3 %Kalamazoo County63.3Oakland County: 62.6 %Oakland County62.6Macomb County: 62.6 %Macomb County62.6Kent County: 62.5 %Kent County62.5Wayne County: 62 %Wayne County62Livingston County: 61.8 %Livingston County61.8Mecosta County: 61.7 %Mecosta County61.7Gratiot County: 61.4 %Gratiot County61.4Jackson County: 61.4 %Jackson County61.4Montcalm County: 61.4 %Montcalm County61.4Ottawa County: 61.4 %Ottawa County61.4Monroe County: 61.4 %Monroe County61.4Lapeer County: 61.3 %Lapeer County61.3Grand Traverse County: 61.1 %Grand Traverse County61.1St. Clair County: 61 %St. Clair County61Clinton County: 60.9 %Clinton County60.9Eaton County: 60.8 %Eaton County60.8Muskegon County: 60.7 %Muskegon County60.7Shiawassee County: 60.7 %Shiawassee County60.7Alger County: 60.6 %Alger County60.6Genesee County: 60.6 %Genesee County60.6Lenawee County: 60.5 %Lenawee County60.5Midland County: 60.4 %Midland County60.4Baraga County: 60.3 %Baraga County60.3Bay County: 60.2 %Bay County60.2Gogebic County: 60.1 %Gogebic County60.1Lake County: 59.9 %Lake County59.9Calhoun County: 59.9 %Calhoun County59.9Saginaw County: 59.8 %Saginaw County59.8Allegan County: 59.7 %Allegan County59.7Barry County: 59.3 %Barry County59.3Van Buren County: 59.3 %Van Buren County59.3Cass County: 59.3 %Cass County59.3
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2016 (%)Change on 2015
1Isabella County69.4-0.5 pts
2Washtenaw County68.2-0.2 pts
3Ingham County66.9-0.3 pts
4Chippewa County64.1-0.4 pts
5Ionia County63.7-0.3 pts
6Marquette County63.5-1.1 pts
7Houghton County63.4-0.2 pts
8Kalamazoo County63.3-0.4 pts
9Oakland County62.6-0.1 pts
10Macomb County62.6-0.1 pts
11Kent County62.5-0.1 pts
12Wayne County62-0.1 pts
13Livingston County61.8-0.2 pts
14Mecosta County61.7-0.6 pts
15Gratiot County61.4-0.5 pts
16Jackson County61.4-0.4 pts
17Montcalm County61.4-0.1 pts
18Ottawa County61.4-0.2 pts
19Monroe County61.4-0.3 pts
20Lapeer County61.3-0.3 pts
21Grand Traverse County61.1-0.4 pts
22St. Clair County61-0.2 pts
23Clinton County60.9-0.4 pts
24Eaton County60.8-0.4 pts
25Muskegon County60.7-0.3 pts
26Shiawassee County60.7-0.1 pts
27Alger County60.6-0.2 pts
28Genesee County60.6-0.2 pts
29Lenawee County60.5-0.3 pts
30Midland County60.4-0.5 pts
31Baraga County60.3-0.8 pts
32Bay County60.2-0.3 pts
33Gogebic County60.1-0.6 pts
34Lake County59.9+0.7 pts
35Calhoun County59.9-0.2 pts
36Saginaw County59.8-0.5 pts
37Allegan County59.7-0.3 pts
38Barry County59.3-0.2 pts
38Van Buren County59.3-0.3 pts
40Cass County59.3-0.1 pts
41Tuscola County59.2-0.3 pts
42Hillsdale County59-0.5 pts
43Dickinson County58.9-0.5 pts
44Berrien County58.9-0.4 pts
45Emmet County58.8-0.7 pts
46Kalkaska County58.8-0.5 pts
47Newaygo County58.8-0 pts
48Otsego County58.7-0.3 pts
49Branch County58.5-0.4 pts
50Manistee County58.4-0.3 pts
51Luce County58.4-1.2 pts
52Alpena County58.4-0.3 pts
53Menominee County58.3-0.5 pts
54Wexford County58.2-0.5 pts
55Arenac County58.2-0.4 pts
56St. Joseph County58.1-0.2 pts
57Sanilac County57.9-0.3 pts
58Clare County57.5-0.6 pts
59Delta County57.3-0.4 pts
60Mason County57.3-0.3 pts
61Charlevoix County57.2-0.4 pts
62Huron County56.8-0.2 pts
63Schoolcraft County56.8-0.5 pts
64Missaukee County56.8-0.6 pts
65Mackinac County56.7-0.6 pts
66Ogemaw County56.7-0.3 pts
67Crawford County56.6-0.9 pts
68Benzie County56.5-0.3 pts
69Osceola County56.4-0.2 pts
70Oceana County56.4-0.1 pts
71Cheboygan County56.4-0.4 pts
72Antrim County55.6-0 pts
73Gladwin County55-0.1 pts
74Iron County54.8-0.6 pts
75Iosco County54.7-0.3 pts
76Oscoda County54.5-0.4 pts
77Montmorency County54.4-0.5 pts
78Roscommon County54.2-0.5 pts
79Leelanau County54.2-0.7 pts
80Ontonagon County53.9-0.4 pts
81Presque Isle County53.7-0.6 pts
82Alcona County51.7+0.2 pts
83Keweenaw County51.2-1.2 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, 2016) [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, 2016. 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=2016. 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, 2016. 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=2016.

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, 2016 [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=2016 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_michigan_by_2016,
  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, 2016}},
  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=2016. 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, 2016
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=2016
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-18-64/michigan-counties?period=2016.
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?

Isabella County, with 69.4% in 2016, according to the U.S. Census Bureau.

Which county has the lowest population aged 18 to 64?

Keweenaw County, with 51.2% in 2016.

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