Michigan population age distribution
A complete breakdown of Michigan's age demographics from 0 to 85 years, distributed across 18 age groups is listed in the table below.
Age Group | Population | % of Total Population |
---|---|---|
Under 5 years | 564,817 | 5.61% |
5 to 9 years | 594,919 | 5.91% |
10 to 14 years | 634,193 | 6.3% |
15 to 19 years | 662,727 | 6.59% |
20 to 24 years | 682,724 | 6.78% |
25 to 29 years | 676,297 | 6.72% |
30 to 34 years | 622,738 | 6.19% |
35 to 39 years | 613,102 | 6.09% |
40 to 44 years | 579,178 | 5.76% |
45 to 49 years | 619,853 | 6.16% |
50 to 54 years | 662,325 | 6.58% |
55 to 59 years | 711,087 | 7.07% |
60 to 64 years | 705,496 | 7.01% |
65 to 69 years | 587,244 | 5.84% |
70 to 74 years | 459,662 | 4.57% |
75 to 79 years | 289,692 | 2.88% |
80 to 84 years | 188,378 | 1.87% |
85 years and over | 208,080 | 2.07% |
TABLE OF CONTENTS
Michigan population by age group
Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

The largest age group in Michigan was for the group of age 55-59 years with a population of 711,087 (7.07%), according to the 2021 American Community Survey.
At the same time, the smallest age group in Michigan was the 80-84 years with a population of 188,378 (1.87%).
Michigan population by age cohort
To better understand the age distribution of Michigan's population, we divided it into the following 3 cohorts:
- Children : Under the age of 18 years
- Adults (working population): Between the age of 18 and 64 years
- Seniors: 65 years and above

Here's the population for each of the three cohorts.
Age Group | Population | % of Total Population |
---|---|---|
Under 18 years | 2,188,856 | 21.75% |
18 to 64 years | 6,140,600 | 61.02% |
85 years and over | 1,733,056 | 17.22% |
Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:
- Michigan's population under 18 was 21.75%, compared to the 22.51% nationwide.
- Michigan's working population (between 18 and 64) was 61.02%, compared to 61.45% nationwide.
- Michigan's elderly or the senior population (over 65 age) was 17.22% as compared to 16.04% nationwide.
Michigan population pyramid
Population pyramid for Michigan is charted below using the estimates from U.S. Census Bureau's American Community Survey 5-Year estimates. A wide base suggests population increase, narrow base indicates declining birth rates.
Key stats from our analysis of the Michigan's population pyramid:
- Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Michigan, is 27.4.
- Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Michigan, is 26.5.
- Total dependency ratio for Michigan is 54.0.
- Potential support ratio, which is the number of youth (working age population) per elderly, for Michigan is 3.8.

Here's the Michigan's male and female population across different age groups:
Age Group | Population(Male) | Population(Female) | Total Population |
---|---|---|---|
Under 5 years | 288,862 | 275,955 | 564,817 |
5 to 9 years | 306,114 | 288,805 | 594,919 |
10 to 14 years | 324,974 | 309,219 | 634,193 |
15 to 19 years | 339,252 | 323,475 | 662,727 |
20 to 24 years | 347,899 | 334,825 | 682,724 |
25 to 29 years | 344,878 | 331,419 | 676,297 |
30 to 34 years | 313,922 | 308,816 | 622,738 |
35 to 39 years | 307,002 | 306,100 | 613,102 |
40 to 44 years | 290,209 | 288,969 | 579,178 |
45 to 49 years | 308,761 | 311,092 | 619,853 |
50 to 54 years | 329,890 | 332,435 | 662,325 |
55 to 59 years | 350,845 | 360,242 | 711,087 |
60 to 64 years | 345,966 | 359,530 | 705,496 |
65 to 69 years | 284,320 | 302,924 | 587,244 |
70 to 74 years | 214,587 | 245,075 | 459,662 |
75 to 79 years | 131,350 | 158,342 | 289,692 |
80 to 84 years | 80,360 | 108,018 | 188,378 |
85 years and over | 74,134 | 133,946 | 208,080 |
Things to know
What is the population of Michigan under 18?
Michigan's population under the age of 18 is 2,188,856, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 21.75% of the total resident population of Michigan.
What is the aging population in Michigan?
Michigan's population aged 65 years and above was 1,733,056. As per the U.S. Census Bureau's American Community Survey, this population is 17.22% of the entire population.
References
- U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates