What is the population of Ionia County?

The population of Ionia County, MI is 64,553.

Where is Ionia County located?

Ionia County, MI is located at latitude 42.9450900 and longitude -85.0746000. It is in United States.

What is the area of Ionia County?

The area of Ionia County, MI is 1503 km².

What is the elevation of Ionia County?

Ionia County, MI has an elevation of 247 meters (810 feet) above sea level.

What time zone is Ionia County in?

Ionia County, MI is in the America/Detroit time zone.

How has the population of Ionia County changed?

The population of Ionia County, MI has increased from 63,905 (2010) to 64,553 (2020), a change of 1%.

Ionia County, Michigan

Ionia County: county in MIchigan, United States

About

Ionia County is a county located in the U.S. state of Michigan. As of the 2010 census, the population was 63,905 and a population density of 43 people per km². After 10 years in 2020 county had an estimated population of 64,553 inhabitants. Its county seat is Ionia. The county was created 195 years ago in 1831.

Ionia County locator map — Location of Ionia County on Michigan map.

County Snapshot

Ionia County at a glance

Ionia County currently has 11 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.

Browse county places

Mapped populated places

These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.

Michigan counties

Open related pages

Largest city

Belding

Population 5,738

Quick Facts about Ionia County

Population	64,553 (2020)
Country	United States of America
State	Michigan (United States)
Area	1503 km²
Water as percent of area	1.5%
Land as percent of area	98.5%
Latitude & Longitude	42.9451,-85.0746
Named for	Ionia
Altitude	810 feet / 247 meters
Capital	Ionia
Establishment	March 02, 1831
Time Zone	America/Detroit
Local time	21:32:22 (18th April 2026)
Density	43 Pop. per km² as of 2020
Population growth	1% (2010-2020)
Weather	57℉ Chance Rain Showers then Partly Sunny 7-days weather

IoniaCountyCouthouseIoniaMi image

Geography

Ionia County is located at 42°56'42"N 85°4'29"W (42.9450900, -85.0746000). It has 2 neighbors: Barry County and Montcalm County.

Ionia County map

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The largest city of Ionia County is Belding with a population of 5,738. Other cities include, Ionia population 3,820, Portland population 3,490, Lake Odessa population 2,041 and Saranac population 1,325. See all Ionia County cities & populated places.

Ionia County Populated Places

Cities, towns, neighborhoods & other populated places in Ionia County.

City Name	Population	Title
Belding	5,738	City in Ionia County in the U.
Ionia	3,820	City in and county seat of Ionia County, Michigan, United States
Portland	3,490	City in Michigan, United States
Orleans	2,836	Township of Michigan
Lake Odessa	2,041	City in Ionia County, Michigan, United States of America
Saranac	1,325	City in Ionia County, Michigan, United States of America
Lyons	808	Human settlement in Ionia County, Michigan, United States of America
Muir	609	Village in Lyons Township, Ionia County in the U.
Pewamo	482	Village in Ionia County, Michigan, United States of America
Hubbardston	402	Village in Ionia and Clinton counties in Michigan, United States
Clarksville	395	Human settlement in Ionia County, Michigan, United States of America

Weather

57°F

Chance Rain Showers then Partly Sunny

18 mph W Today

A chance of rain showers before 11am. Partly sunny. High near 57, with temperatures falling to around 44 in the afternoon. West wind around 18 mph, wi...

7-Day Forecast

Official website of Ionia County

Official Website

Ionia County has 2 neighbours.

Barry County county in Michigan, United States
Montcalm County county in Michigan, United States

Ionia

Demographics

The population of Ionia County increased by 1% in 10 years.

Year	Population	% Change	Method
2010	63,905	-	census
2011	63,860	-0.07%	estimation process
2012	63,888	0.04%	estimation process
2013	63,991	0.16%	estimation process
2014	64,232	0.38%	estimation process
2015	64,056	-0.27%	estimation process
2016	64,187	0.2%	estimation process
2017	64,284	0.15%	estimation process
2018	64,276	-0.01%	estimation process
2019	64,697	0.65%	estimation process
2020	64,553	-0.22%	estimation process

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Genesee County	404,794	County in Michigan, United States
Washtenaw County	366,473	County in Michigan, United States
Ottawa County	294,635	County in Michigan, United States
Ingham County	290,609	County in Michigan, United States
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Grand Rapids	200,031	The second most populous city in Michigan.
Livingston County	192,335	County in Michigan, United States
Saginaw County	189,868	County in Michigan, United States
Muskegon County	173,883	County in Michigan, United States
Saint Clair County	159,293	County in Alabama, United States
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