Michigan

Ionia

66,804
2020 population
1840
first census record
19
census records

About Ionia

Ionia, Michigan, first appears in the United States federal census in 1840, when it recorded a population of 1,923. At the most recent census, in 2020, its population stood at 66,804.

The county's recorded population has risen across the decades to its highest level in 2020.

On the ground today, 16 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
202066,804
201063,905
200061,518
199057,024
198051,815
197045,848
196043,132
195038,158
194035,710
193035,093
192033,087
191033,550
190034,329
189032,801
188033,872
187027,681
186016,682
18507,597
18401,923
Source

Population data from the United States decennial census, U.S. Census Bureau (public domain).

Historic places in Ionia

National Register of Historic Places listings in Ionia, Michigan.

Portland Downtown Historic District
Portland
Sessions Schoolhouse
Ionia
Belding, Alvah N., Memorial Library
Belding
Ionia Downtown Commercial Historic District
Ionia
Richardson Silk Mill
Belding
Portland First Congregational Church
Portland
VanderHeyden, William H., House
Ionia
Pere Marquette Railway Belding Depot
Belding
St. John the Baptist Catholic Church Complex
Hubbardston
Ionia Historic District
Ionia
Portland High School
Portland
Hall-Fowler Memorial Library
Ionia
Lovell-Webber House
Ionia
Blanchard, John C., House
Ionia
Ionia County Courthouse
Ionia
Muir Church of Christ
Muir

Other counties in Michigan

Explore census history and historic records for more Michigan counties.

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Everything a full report reveals about Ionia County, Michigan

This page charts the census history of Ionia County, Michigan. A full Aubrey report for an address here pulls together everything the historical record holds about the ground, from the earliest settlement to the twentieth century:

Overview
An interactive map of the location with historic sites, battles and Native heritage plotted, and its full story era by era.
The Land
The historic sites and place names around the location, and how this land was settled and used.
Geology
The bedrock beneath the site, its age and rock type, reaching back millions of years.
LiDAR Terrain
Laser-scanned terrain that reveals earthworks and old features hidden in the landscape.
Conflict & War
The battles, raids and skirmishes fought near here, across every era of American conflict.
The Civil War
The Civil War on this ground, 1861 to 1865: who held it, and the battles, camps and regiments nearby.
The Soldiers
The men who marched from here in the Civil War, named and traced where the record allows.
Native Heritage
The Native nations who held this land, mapped across time from before European contact to today.
Settlement
Who claimed and held this ground, from Indigenous homelands through the colonial powers to the United States.
The Community
How the town grew, who came, and what kind of place it became, traced through the census record.
Rivers & Rail
The rivers, canals and railroads that connected this place between 1830 and 1911.
Notable People
The people born, buried or genuinely tied to this exact place, with their stories.
Historical Maps
Historic maps of the location layered over how it looks today.
Finds & Access
Museum objects tied to the area, and the laws on searching, collecting and access here.
Literature
The old books, county histories and archives that mention this place, quoted with their sources.
Spotlight
A deep dive into the most remarkable, lesser-known history of the place, traced back to the record.
Points of Interest
The most significant historic sites and landmarks near the location, and why they matter.
Timeline
The whole story of the location told era by era, from first peoples to the present day.
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Frequently asked about Ionia

When does Ionia first appear in the US census?
Ionia, Michigan first appears in the federal census in 1840, with a recorded population of 1,923.
What is the population of Ionia?
At the most recent federal census (2020), Ionia had a recorded population of 66,804.
How many historic places are in Ionia?
16 sites are listed on the National Register of Historic Places in Ionia, Michigan.
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