Data / Rankings / Population aged 65 and over / Counties in Michigan

Counties in Michigan by share of population aged 65 and over

Ontonagon County had the highest share of population aged 65 and over of 83 counties in 2021, at 36.7%. Kent County had the lowest, at 14.9%. The median was 21.8% and the figure for Michigan was 18.5%. Source: the U.S. Census Bureau.

Highest36.7Ontonagon County
Lowest14.9Kent County
Median21.883 counties
Michigan18.5History

Top 40 counties, 2021

CSVChart (SVG)

Ontonagon CountyOntonagon County: 36.7 %36.7Keweenaw CountyKeweenaw County: 36.2 %36.2Alcona CountyAlcona County: 35.6 %35.6Presque Isle CountyPresque Isle County: 33.5 %33.5Montmorency CountyMontmorency County: 33.5 %33.5Roscommon CountyRoscommon County: 33.3 %33.3Leelanau CountyLeelanau County: 33.2 %33.2Iron CountyIron County: 30.5 %30.5Iosco CountyIosco County: 30.3 %30.3Oscoda CountyOscoda County: 30.1 %30.1Mackinac CountyMackinac County: 30 %30Schoolcraft CountySchoolcraft County: 28.9 %28.9Antrim CountyAntrim County: 28.5 %28.5Gogebic CountyGogebic County: 28.5 %28.5Cheboygan CountyCheboygan County: 28.2 %28.2Benzie CountyBenzie County: 28 %28Ogemaw CountyOgemaw County: 27.5 %27.5Gladwin CountyGladwin County: 27.4 %27.4Manistee CountyManistee County: 27.3 %27.3Arenac CountyArenac County: 27 %27Huron CountyHuron County: 26.8 %26.8Lake CountyLake County: 26.8 %26.8Charlevoix CountyCharlevoix County: 26.7 %26.7Alger CountyAlger County: 26.7 %26.7Crawford CountyCrawford County: 26.3 %26.3Menominee CountyMenominee County: 26.3 %26.3Mason CountyMason County: 25.9 %25.9Delta CountyDelta County: 25.4 %25.4Alpena CountyAlpena County: 25.4 %25.4Emmet CountyEmmet County: 25.3 %25.3Clare CountyClare County: 24.8 %24.8Dickinson CountyDickinson County: 24.1 %24.1Luce CountyLuce County: 24.1 %24.1Baraga CountyBaraga County: 23.8 %23.8Sanilac CountySanilac County: 22.5 %22.5Kalkaska CountyKalkaska County: 22.5 %22.5Otsego CountyOtsego County: 22.3 %22.3Grand Traverse CountyGrand Traverse County: 22.1 %22.1Missaukee CountyMissaukee County: 22 %22Oceana CountyOceana County: 22 %22
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2021 (%)Change on 2020
1Ontonagon County36.7-0.3 pts
2Keweenaw County36.2+0.3 pts
3Alcona County35.6-0.2 pts
4Presque Isle County33.5+0.5 pts
5Montmorency County33.5+0.4 pts
6Roscommon County33.3+0.2 pts
7Leelanau County33.2+0.5 pts
8Iron County30.5+0.6 pts
9Iosco County30.3+0.1 pts
10Oscoda County30.1+0.5 pts
11Mackinac County30+0.2 pts
12Schoolcraft County28.9+0.8 pts
13Antrim County28.5+0.3 pts
14Gogebic County28.5+0.3 pts
15Cheboygan County28.2+0.3 pts
16Benzie County28+0.6 pts
17Ogemaw County27.5+0.9 pts
18Gladwin County27.4+0.1 pts
19Manistee County27.3+0.5 pts
20Arenac County27+0.7 pts
21Huron County26.8+0.3 pts
22Lake County26.8+0.1 pts
23Charlevoix County26.7+0.9 pts
24Alger County26.7+1 pts
25Crawford County26.3-0 pts
26Menominee County26.3+0.7 pts
27Mason County25.9+0.6 pts
28Delta County25.4+0.4 pts
29Alpena County25.4+0.5 pts
30Emmet County25.3+0.6 pts
31Clare County24.8+0.5 pts
32Dickinson County24.1+0.6 pts
33Luce County24.1+1.9 pts
34Baraga County23.8-0 pts
35Sanilac County22.5+0.3 pts
36Kalkaska County22.5+0.5 pts
37Otsego County22.3+0.3 pts
38Grand Traverse County22.1+0.6 pts
39Missaukee County22+0.4 pts
40Oceana County22+0.3 pts
41Cass County21.8+0.5 pts
42Bay County21.8+0.4 pts
43Tuscola County21.7+0.5 pts
44Osceola County21.6+0.4 pts
45Berrien County21.5+0.6 pts
46Hillsdale County21.2+0.6 pts
47Marquette County21.1+0.6 pts
48Newaygo County20.6+0.5 pts
49Wexford County20.6+0.4 pts
50Mecosta County20.5+0.2 pts
51Lenawee County20.5+0.4 pts
52Saginaw County20.4+0.3 pts
53Shiawassee County20.3+0.4 pts
54Midland County20.3+0.4 pts
55St. Clair County20.2+0.5 pts
56Eaton County20.1+0.5 pts
57Lapeer County20+0.6 pts
58Chippewa County19.8+0.7 pts
59Van Buren County19.8+0.5 pts
60Barry County19.5+0.4 pts
61Monroe County19.3+0.5 pts
62Branch County19.2+0.2 pts
63Jackson County19.1+0.4 pts
64Livingston County19.1+0.7 pts
65St. Joseph County18.9+0.4 pts
66Calhoun County18.7+0.2 pts
67Muskegon County18.7+0.4 pts
68Clinton County18.6+0.5 pts
69Genesee County18.6+0.4 pts
70Houghton County18.5+0.1 pts
71Gratiot County18.5+0.3 pts
72Oakland County18.3+0.5 pts
73Macomb County18.2+0.5 pts
74Allegan County18.1+0.6 pts
75Montcalm County18.1+0.3 pts
76Kalamazoo County16.9+0.5 pts
77Ottawa County16.5+0.5 pts
78Wayne County16+0.5 pts
79Ionia County16+0.7 pts
80Washtenaw County15.8+0.8 pts
81Ingham County15.7+1.1 pts
82Isabella County15.2+0.3 pts
83Kent County14.9+0.4 pts

Other periods

About this ranking

Residents aged 65 or over as a percentage of total population. Spain: 1 January, INE annual census. United States: 1 July, Census Bureau population estimates. World Bank figures for other countries and the World refer to mid-year.

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 (cc-est agesex): residents aged 65 and over as a percentage of the total, 1 July; states and the nation summed from counties. https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/counties/asrh/cc-est2025-agesex-all.csv. Retrieved 2026-10-09.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

Rank Counties in Michigan by share of population aged 65 and over using official data, and cite the source.
rank_places {"indicator":"population_65_plus_share","level":"province","within":"Michigan","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=population_65_plus_share&level=province&within=Michigan&limit=10

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Questions

Which county has the highest share of population aged 65 and over?

Ontonagon County, with 36.7% in 2021, according to the U.S. Census Bureau.

Which county has the lowest share of population aged 65 and over?

Kent County, with 14.9% in 2021.

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 (cc-est agesex): residents aged 65 and over as a percentage of the total, 1 July; states and the nation summed from counties. Retrieved 2026-10-09.

Population aged 65 and over: other rankings

Counties in Michigan: more rankings