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

Population trends in
Figure 1: Annual population growth trend for (2010–2024).

Ionia County, Michigan Demographic Trend

Since 2010, the population of has changed by +3.0%%.

+3.0%% Growth

Ionia County, Michigan Age & Gender Pyramid

Population pyramid for

Figure 2: Population distribution by age and gender for 2024.


Ionia County, Michigan Historical Population Data

YearMedian AgePopulation
202439.166,574
202338.866,706
202239.166,663
202139.066,564
202038.664,401
201938.764,300
201838.764,176
201738.764,147
201638.264,126
201537.964,064
201437.363,976
201336.863,909
201236.564,149
201136.464,418
201035.964,651

Ionia County, Michigan Age Group Breakdown (2024)

Age CohortPercentage
Under 55.0%
5–1715.9%
18–248.9%
25–3414.7%
35–5426.3%
55–6413.3%
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.
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