Ionia County, Michigan Demographics 2026

Population Overview

Ionia County is located in Michigan with a total population of 66,706. It is the 29th most populous county out of 83 in Michigan. The county encompasses 3 Census-designated places.

Age Demographics

The median age in Ionia County is 38.8 years. This is 3% lower than the state median of 40.1 years.

Economy, Income & Housing

The median household income in Ionia County is $73,436. This is 3% higher than the state median of $71,149. Compared to the national median of $78,538, household income here is 6% lower. The poverty rate stands at 11.4%. This is 13% lower than the state poverty rate of 13.1%. The unemployment rate is 4.9%. This is 15% lower than the state rate of 5.8%. The median home value is $189,400. Housing costs are 13% lower than the state median of $217,600. With a home-value-to-income ratio of just 2.6x, Ionia County is one of the most affordable housing markets in the area. 77.3% of occupied housing units are owner-occupied. This homeownership rate is 6% higher than the state average of 72.9%.

Race & Ethnicity

Ionia County has a predominantly White (non-Hispanic) population, comprising 85.7% of all residents. Hispanic or Latino residents account for 5.2%. The Black or African American population (3.7%) is well below the state average of 13.2%. The Asian population (0.5%) is well below the state average of 3.3%.

Education

18.0% of residents aged 25 and older hold a bachelor's degree or higher. This is 43% lower than the state rate of 31.8%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 91.4%.