Ionia County, MI Demographics
Ionia County, MI is the 28th most populous of 83 counties in Michigan, with 66,804 residents across 571 square miles. That is about 117 people per square mile.
At the 2020 census
| Population | 66,804 |
|---|---|
| Land area | 571 sq mi |
| Density | 117 / sq mi |
Data: 2020 Census · American Community Survey 2024
How Ionia County compares to the US
We're computing this county's comparison table — check back shortly. Population, land area, and density above are already exact.
Central Location: Ionia County, MI
Measured from the county's main population center using 2020 census blocks.
We're computing the drive-time and radius areas around Ionia County, MI — check back shortly. Meanwhile you can drop a pin anywhere in the radius tool.
Census tracts in Ionia County, MI
| Name | Population | Sq mi | Per sq mi |
|---|---|---|---|
| Census Tract 319 | 6,002 | 110.5 | 54 |
| Census Tract 9822 | 5,533 | 0.8 | 7,209 |
| Census Tract 315 | 5,392 | 37.2 | 145 |
| Census Tract 316 | 5,360 | 25.5 | 210 |
| Census Tract 314 | 5,238 | 32.7 | 160 |
| Census Tract 313.01 | 5,159 | 25.9 | 199 |
| Census Tract 312 | 5,042 | 71.5 | 70 |
| Census Tract 301.02 | 3,839 | 51.7 | 74 |
| Census Tract 317 | 3,701 | 2.0 | 1,850 |
| Census Tract 304.01 | 3,647 | 45.3 | 80 |
| Census Tract 313.02 | 3,261 | 44.9 | 73 |
| Census Tract 303 | 3,091 | 2.8 | 1,104 |
| Census Tract 304.02 | 3,015 | 56.4 | 53 |
| Census Tract 321 | 2,951 | 6.0 | 491 |
| Census Tract 302 | 2,847 | 1.9 | 1,497 |
| Census Tract 301.01 | 2,726 | 56.2 | 49 |
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About this page
This page shows demographics for a US county from the 2020 census and the American Community Survey: population, land area, density, urban share, and how the county compares to national averages for income, housing, age, and more.
Counties subdivide into census tracts, listed below with their populations. The drive-time and radius tables measure the population around the county's main population center.