Ionia, MI Profile: Facts, Map & Data


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Ionia, Michigan - Basic Facts

The City of Ionia had a population of 11,684 as of July 1, 2016. Ionia ranks in the upper quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Michigan. See peer rankings below.

The primary coordinate point for Ionia is located at latitude 42.9768 and longitude -85.0746 in Ionia County. The formal boundaries for the City of Ionia (see map below) encompass a land area of 5.35 sq. miles and a water area of 0.13 sq. miles. Ionia County is in the Eastern time zone (GMT -5). The elevation is 718 feet.

The City of Ionia (GNIS ID: 1626521) has a C5 Census Class Code which indicates an active incorporated place that is independent of any county subdivision and serves as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

Beneath the boundary map are tables with Ionia population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2016.

Alternate Unofficial Names for Ionia: Ionia Centre.

Neighborhood Data

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City of Ionia, MI Boundary Map

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Ionia, MI Data & Demographics (As of July 1, 2016)


Total Population 11,684
Population in Households 6,838
Population in Familes 5,369
Population in Group Qrtrs 4,846
Population Density1 2,185
Diversity Index2 52


Total Households 2,515
Average Household Size 2.72
Family Households 1,636
Average Family Size 3


Total Housing Units 2,901 (100%)
Owner Occupied HU 1,582 (54.5%)
Renter Occupied HU 934 (32.2%)
Vacant Housing Units 386 (13.3%)
Median Home Value $89,917
Average Home Value $116,492


Median Household Income $35,619
Average Household Income $45,194
Per Capita Income $13,092
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.4% 0.29%
Households 0.56% 0.53%
Families 1.18% 0.4%
Median Household Income   1.71%
Per Capita Income   1.34%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.

Ionia, MI - Peer Comparisons by Rank and Percentile

The table below compares Ionia to the other 692 incorporated cities, towns and CDPs in Michigan by rank and percentile using July 1, 2016 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 86 88th
Population Density1 # 122 83rd
Diversity Index2 # 53 92nd
Median Household Income # 571 18th
Per Capita Income # 686 1st

Additional comparisons and rankings can be made with a VERY EASY TO USE Michigan Census Data Comparison Tool.

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