Ionia County Flag

Ionia County

State:
Michigan
County Seat:
Ionia

Ionia County's estimated 2026 population is 66,542 with a growth rate of 0.22% in the past year according to the most recent United States census data. Ionia County is the 30th largest county in Michigan. The 2010 population was 63,847 and has seen a growth of 4.22% since that time.

66,542
Total Population
117
Population Density (mi²)
30
Population Rank (State)
146 0.22%
Annual Population Growth

Ionia County Population

Demographics

Economics and Income Statistics