Ionia County, Michigan Population 2026

Updated April 2026 · US Census ACS 2023 5-Year Estimates · 29th-largest in Michigan

The population of Ionia County, Michigan is 66,706 as of the 2023 American Community Survey, making it the 29th-largest county in Michigan. The median household income is $73,436, the median home value is $189,400, and the median age is 38.8.

The population of Ionia County has grown 3.8% since 2010 (63,847 → 66,250), a +0.26% annualized rate.

Ionia County within Michigan · Source: US Census TIGER/Line via us-atlas

66,706

Population

+0.26%

Annual growth

117

People / sq mi

$73,436

Median Income

$189,400

Median Home Value

Ionia County covers 571 sq mi of land at 116.8 people per square mile.

About Ionia County, MI

Ionia County is distinguished by its share of foreign-born residents, 10.9% of the population. Ionia County is a county in Michigan with a population of 66,706. It ranks #29 among counties in Michigan by population.

The typical household earns $73,436 a year, below the US median of $78,538. About 7.5% of residents live below the federal poverty level, below the national 12.4%. Homes carry a median value of $189,400, with typical rent around $840.

Degree attainment is mid-range for US counties: 18.0% of adults hold a four-year degree, below the national 35.0%. Remote work is below the national 14.0% at 8.3%, and the average commute runs about 27 minutes each way.

Ionia County Population History (2010-2024)

The county of Ionia County had a population of 63,847 in 2010 and 66,250 in 2024, a 3.8% growth over 14 years. The peak was 66,891 in 2020. Average annual growth rate: 0.27%.

Ionia County population, 2010–2024 · Source: U.S. Census Bureau — decennial census & Population Estimates

66,250

Population (2024)

63,847

Population (2010)

66,891

Peak (2020)

0.27%

Avg Annual Growth

Year	Population	Change	Annual %	Source
2010	63,847	-	-	estimate
2011	63,865	+18	+0.03%	estimate
2012	63,890	+25	+0.04%	estimate
2013	64,001	+111	+0.17%	estimate
2014	64,246	+245	+0.38%	estimate
2015	64,073	-173	-0.27%	estimate
2016	64,215	+142	+0.22%	estimate
2017	64,293	+78	+0.12%	estimate
2018	64,290	-3	-0.00%	estimate
2019	64,654	+364	+0.57%	estimate
2020	66,891	+2,237	+3.46%	estimate
2021	66,853	-38	-0.06%	estimate
2022	66,774	-79	-0.12%	estimate
2023	66,104	-670	-1.00%	estimate
2024	66,250	+146	+0.22%	estimate

Race & Ethnicity

White	87.6%
Black or African American	3.8%
Asian	0.0%
Hispanic or Latino (any race)	3.0%
Two or More Races	0.0%

Age & Sex

38.8

Median Age

45.7%

Female

54.3%

Male

15.4%

Age 65+

Age Distribution

Under 5

5.2%

5–9

5.3%

10–14

6.9%

15–19

6.3%

20–24

6.5%

25–34

14.7%

35–44

14.0%

45–54

12.7%

55–59

6.3%

60–64

6.8%

65–74

9.8%

75–84

3.8%

85+

1.8%

Children (under 15): 17.4% · Seniors (65+): 15.4%

Income & Poverty

Median household income	$73,436+$2,287 vs state
Mean household income	$84,553
Per-capita income	$31,593
Poverty rate	7.5%-1.3% vs state
Unemployment rate	2.9%
Employment-to-population	56.2%

Top Industries by Employment

Manufacturing

20.9%

Professional & business services

16.4%

Construction

8.2%

Education & health care

6.7%

Finance & real estate

6.5%

Information

5.6%

Arts, entertainment & food

5.5%

Public administration

5.4%

The largest employment sector in Ionia County is manufacturing, accounting for 20.9% of workers.

How residents commute

1.4%

Drive alone

2.2%

Carpool

80.1%

Public transit

8.3%

Work from home

27.4 min

Avg commute

Housing

$189,400$-28,200 vs state

Median home value

$840

Median rent

77.2%

Homeownership rate

24,746

Total housing units

92.9%

Occupied

7.1%

Vacant

22.8%

Renter-occupied

Social & access

94.0%

With health insurance

93.5%

With broadband internet

10.9%

Foreign-born

6.9%

Veterans (18+)

13.8%

With a disability

97.2%

Speak language other than English at home

Education

91.4%

High School+

18.0%

Bachelor's+

Largest cities in Michigan

Detroit (636,644)Grand Rapids (197,768)Warren (138,128)Sterling Heights (133,473)Ann Arbor (121,179)Lansing (112,546)Dearborn (107,846)Livonia (94,058)Troy (87,307)Westland (84,155)All Michigan cities →

Other counties in Michigan

Wayne County (1,773,767)Oakland County (1,272,294)Macomb County (877,624)Kent County (658,844)Genesee County (404,087)Washtenaw County (368,394)Ottawa County (298,614)Ingham County (282,015)Kalamazoo County (261,437)Livingston County (195,143)All Michigan counties →

Part of Michigan

Michigan demographic profile All Michigan data →

Metro areas in Michigan

Detroit (4,367,620)Grand Rapids (1,154,320)Lansing (470,434)Flint (404,087)Ann Arbor (368,394)South Bend (324,180)Kalamazoo (261,437)Saginaw (189,210)All US metros →

County rankings

US Counties by Population Richest US Counties by Median Household Income Expensive US Counties by Home Value Educated US Counties Counties With Highest Poverty Rates Youngest US Counties by Median Age Oldest US Counties by Median Age Cheapest US Counties by Median Home Value Racially Diverse US Counties Counties With Largest Hispanic Population All rankings →

Frequently Asked Questions

Ionia County, Michigan has a population of 66,706 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 29th-largest county in Michigan. Population density is 117 people per square mile.

The population of Ionia County has grown 3.8% since 2010 (63,847 → 66,250), a +0.26% annualized rate.

The median household income in Ionia County, Michigan is $73,436, with mean (average) household income of $84,553 and per-capita income of $31,593. 7.5% of residents live below the federal poverty level.

In Ionia County, the largest racial and ethnic groups are White (87.6%), Black or African American (3.8%), Hispanic or Latino (3.0%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.

The median age in Ionia County, Michigan is 38.8 years. Residents are 45.7% female and 54.3% male.

The median home value in Ionia County is $189,400 and median monthly rent is $840. 77.2% of occupied housing units are owner-occupied. The county has 24,746 total housing units, 7.1% of which are vacant.

The largest employment sector in Ionia County, Michigan is manufacturing, employing 20.9% of workers. The unemployment rate is 2.9%.

Detroit is among the largest cities associated with Ionia County, Michigan, with a population of 636,644.