Ionia County, Michigan Age & Gender Distribution (2024)
Population distribution by age and gender for Ionia County, Michigan
Ionia County, Michigan Age & Gender Statistics (2024)
Total Population
66,574
Median Age
39.1
Male Median
37.5
Female Median
40.4
Ionia County, Michigan Population Growth

Ionia County, Michigan Demographic Trend
Since 2010, the population of has changed by +3.0%%.
+3.0%% Growth
Ionia County, Michigan Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Ionia County, Michigan Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 39.1 | 66,574 |
| 2023 | 38.8 | 66,706 |
| 2022 | 39.1 | 66,663 |
| 2021 | 39.0 | 66,564 |
| 2020 | 38.6 | 64,401 |
| 2019 | 38.7 | 64,300 |
| 2018 | 38.7 | 64,176 |
| 2017 | 38.7 | 64,147 |
| 2016 | 38.2 | 64,126 |
| 2015 | 37.9 | 64,064 |
| 2014 | 37.3 | 63,976 |
| 2013 | 36.8 | 63,909 |
| 2012 | 36.5 | 64,149 |
| 2011 | 36.4 | 64,418 |
| 2010 | 35.9 | 64,651 |
Ionia County, Michigan Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.0% |
| 5–17 | 15.9% |
| 18–24 | 8.9% |
| 25–34 | 14.7% |
| 35–54 | 26.3% |
| 55–64 | 13.3% |
| 65+ | 15.8% |
Dependency Ratios for Ionia County, Michigan
- Total Dependency Ratio:
- 58.0
- Youth Dependency:
- 33.0
- Old-Age Dependency:
- 25.0
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Ionia County, Michigan
The median age in Ionia County, Michigan is 39.1 years.
According to latest Census data, the total population of Ionia County, Michigan is 66,574.
In Ionia County, Michigan, seniors (ages 65+) make up 15.8% of the population, while children under 18 represent 15.9%.
Based on historical data since 2010, the population in Ionia County, Michigan is aging.