• county
  • FIPS 26067
  • Largest town: Ionia

Ionia County, Michigan

Ionia County had 66,250 residents in the Census Vintage 2024 estimate, on 571.3 square miles of land. It ranks 30th of 83 in Michigan by population and 40th by land area.

Population
66,250
#30 of 83 in Michigan · #826 in US
Area
571.3 sq mi
#40 of 83 in Michigan · #1,759 in US
Density
116 / sq mi
#29 of 83 in Michigan · #819 in US
Median household income
$70,177
#19 of 83 in Michigan · #989 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

Ionia County within Michigan. Pin: Lansing.

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Ionia County population, land area and income

Ionia County had 66,250 residents in the Census Vintage 2024 estimate, on 571.3 square miles of land. It ranks 30th of 83 in Michigan by population and 40th by land area. That works out to 116.0 people per square mile, 1.2 times the US average of 96.3, and above the national county median.

The median county-equivalent in Michigan has 38,041 residents; Ionia County is somewhat larger.

Its SAIPE 2023 median household income of $70,177 is above the national county median among 3,143 counties with an estimate.

National rank among 3,144

Population

66,250

3144th1st

826th of 3,144 (US)

Land area

571 sq mi

3144th1st

1759th of 3,144 (US)

Density

116.0 / sq mi

3144th1st

819th of 3,144 (US)

Median household income

$70,177

3143rd1st

989th of 3,143 (US)

Rank within Michigan (83)

Population

66,250

83rd1st

30th of 83 (MI)

Land area

571 sq mi

83rd1st

40th of 83 (MI)

Density

116.0 / sq mi

83rd1st

29th of 83 (MI)

Median household income

$70,177

83rd1st

19th of 83 (MI)

How Ionia County's population changed since 2020

Ionia County lost 641 residents between the July 2020 and July 2024 estimates, a drop of 1.0%. That ranks 72nd of 83 in Michigan for growth. The median Michigan county changed by +0.9%, and the state as a whole by +0.7%.

Since the April 2020 estimates base, Ionia County recorded 2,621 births and 2,610 deaths, a natural change of +11. Net international migration added +77 and net domestic migration, people moving to or from other US counties, came to -699. The largest single component was domestic migration, which removed 699 people.

66.9k202066.9k202166.8k202266.1k202366.3k2024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
2,621
Deaths
2,610
Net international migration
+77
Net domestic migration
-699
Change, July 2023 to July 2024
+146

Where Ionia County is

The Census internal point of Ionia County is at 42.944700, -85.073800. It sits in UTM zone 16N. The map shades Michigan's 83 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Ionia County outlined. Dots are towns of 1,000+ people with residents in it.

Calhoun County: -0.3%Benzie County: +2.9%Newaygo County: +2.8%Antrim County: +4.6%Montcalm County: +4.0%Kalamazoo County: +1.1%Isabella County: +0.9%Ingham County: +1.9%Jackson County: +0.0%Kent County: +2.2%Oceana County: +1.1%Roscommon County: +2.0%Clare County: +1.8%Gladwin County: +2.5%Branch County: +2.9%Iosco County: +0.7%Bay County: -1.1%Shiawassee County: -0.0%Ionia County: -1.0%Otsego County: +3.8%Alcona County: +4.3%Missaukee County: +1.1%Crawford County: +4.7%Lapeer County: +0.7%Arenac County: +0.5%Gogebic County: -0.9%Marquette County: +2.2%Alpena County: +0.1%Lenawee County: -1.6%Berrien County: -1.1%Leelanau County: +2.5%Clinton County: +1.1%Alger County: -1.6%Gratiot County: -0.8%St. Joseph County: +0.4%Van Buren County: +0.7%Dickinson County: +0.3%Charlevoix County: +0.3%Sanilac County: -0.5%Wexford County: +2.3%Houghton County: +2.1%Saginaw County: -1.1%Kalkaska County: +3.8%Ottawa County: +3.1%Presque Isle County: +1.8%Eaton County: +0.3%Barry County: +2.3%Lake County: +7.5%Cheboygan County: +1.5%Wayne County: -1.0%Macomb County: +0.7%Oscoda County: +4.4%Emmet County: -0.5%Ontonagon County: +0.4%Schoolcraft County: +1.5%Monroe County: +0.7%Tuscola County: -1.0%Luce County: -1.3%Menominee County: -1.7%Mason County: +0.2%Muskegon County: +1.5%Baraga County: +0.3%Genesee County: -0.9%Grand Traverse County: +1.3%Washtenaw County: +0.5%Huron County: -1.9%Cass County: -0.0%Delta County: -0.5%Montmorency County: +7.2%Oakland County: +1.9%Chippewa County: -1.5%Keweenaw County: +5.0%Hillsdale County: -0.3%Manistee County: +1.8%Allegan County: +1.5%Mecosta County: +3.8%Iron County: +0.8%Osceola County: +2.5%St. Clair County: -0.1%Livingston County: +1.5%Ogemaw County: +1.0%Midland County: +0.6%Mackinac County: +3.1%
Change 2020 to 2024
  1. < -0.5%
  2. < +0.5%
  3. < +1.5%
  4. < +2.5%
  5. ≥ +2.5%
no data

Orange pin: Ionia County internal point. Dark pin: Lansing.

Internal point

Decimal
42.944700, -85.073800
DMS
42°56'40.92"N 85°04'25.68"W
UTM
16N 657144.3E 4756473.8N
Geohash
dpes21g5h
Plus code
86JPWWVG+VF

Towns in Ionia County

5 incorporated places of 1,000+ people have residents in Ionia County, 25,446 people together, or 38% of the county. Each figure counts only the part of the town inside Ionia County; towns marked "part" extend into another county. The largest is Ionia with 12,265.

  1. 01Ionia12,265
  2. 02Belding5,967
  3. 03Portland3,770
  4. 04Lake Odessa2,065
  5. 05Saranac1,379
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Ionia County

The Census 2024 county adjacency file lists 6 neighbors for Ionia County. The most populous is Kent County, MI, with 673,002 residents. Distances run between Census internal points in a straight line.

Distance to Lansing and the nearest big city

Lansing is 30.0 miles ESE of Ionia County's internal point in a straight line. The nearest place of 100,000 or more is Grand Rapids, MI (population 200,117), 29.5 miles away. The nearest place of 10,000 or more is Ionia, MI (population 12,265), 2.2 miles away.

Ionia County FIPS code

The FIPS code of Ionia County is 26067: state code 26 for Michigan plus county code 067. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $70,177.

Questions people ask

What is the population of Ionia County, Michigan?

The Census Vintage 2024 estimate for July 1, 2024 is 66,250. That is down 641 people (1.0%) from the July 2020 estimate of 66,891.

What is the FIPS code of Ionia County?

26067. The first two digits (26) are Michigan; the last three (067) identify the county.

What is the largest town in Ionia County?

Ionia, with 12,265 residents inside Ionia County in 2024.

Which counties border Ionia County?

6 county-equivalents border it in the Census 2024 adjacency file: Kent County, MI; Eaton County, MI; Clinton County, MI; Montcalm County, MI; Barry County, MI; Gratiot County, MI.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.