Data Last Updated: July 1, 2025

Ionia County, MI ZIP Codes

ZIP Codes: Shows how many general ZIP Codes, PO Boxes, Unique (Business), and Multi County ZIP Codes are associated with Ionia, MI.	22 ZIP Codes (11 General, 2 PO Box, 0 Unique, & 9 Multi County) [More Details]
Area Codes: The Telephone Area Codes that are associated with Ionia, MI. Area Codes are used in the North American Numbering Plan (NANP) to facilitate phone routing. There are approximately 350 area codes in use in the United States.	517, 616, 989
Timezone: Time zone designation within the U.S. Please note that not all areas in the U.S. observe daylight saving time which can affect actual local time for this city. There are 7 standard time zones which are, from west to east: Hawaii-Aleutian, Alaska, Pacific, Mountain, Central, Eastern, Atlantic. Also included in U.S. Territories are Samoa, Guam and Palau.	Eastern
Local Time: The current local time for each timezone. If more than 1 time zone for this area, all local times will be shown. Counties can cross timezones, so more than 1 may be shown.	12:00:00 AM
Population: The population of Ionia, MI from the U.S. Census 2020. Included are U.S. Citizens, permanent residents, temporary migrants, and undocumented individuals. The total population represents people who live in the city, not just those present while the Census was being completed.	66,804 [More Details]
FIPS: FIPS stands for Federal Information Processing Standards, which are a set of publicly announced standards for computer systems. A county FIPS code is a unique numeric identifier for a county in the United States, assigned by the National Institute of Standards and Technology (NIST). County FIPS codes have five digits, with the first two digits identifying the state and the last 3 indicating the county.	26067
CBSA: A Core Based Statistical Area (CBSA) is the recognized term for a region that functions around an urban core with a population of at least 10,000 people, according to the standards set by the Office of Management and Budget (OMB) in 2000. A CBSA is divided into two subsets: Metro and Micro, and these classifications are determined by population density. A Micro area is identified by a population ranging between 10,000 to 50,000, while a Metro area is defined as having a population that exceeds 50,000.	Grand Rapids-Wyoming-Kentwood, MI
Land Area: The approximate amount of land area covered by Ionia, MI in square miles. The Land Area provided by the Census Bureau is based on geographic boundaries that include the mainland, islands, inland, coastal, Great Lakes, and territorial waters associated with each city.	571 square miles
Water Area: The approximate amount of water area covered by Ionia, MI in square miles. Calculations by the Census Bureau for Water Area take into account inland bodies of water, coastal regions, Great Lakes, and territorial sea waters. This encompasses features such as lakes, reservoirs, rivers, and coastal water bodies.	9 square miles
Coordinates: The latitude/longitude centroid coordinates for Ionia County, MI.	-85.074603, 42.945096
Quick Link: Copy the direct link to the Ionia, MICounty page and use anywhere you like!	https://www.zip-codes.com/county/mi-ionia.asp

Ionia, MI ZIP Code Boundaries

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Ionia County, MI Covers 22 ZIP Codes

ZIP Code	Classification	City	Population	% of Population
ZIP Code 48809	General	Belding	11,245	16.83%
ZIP Code 48815	General	Clarksville	2,297	3.44%
ZIP Code 48834 *	General	Fenwick	2,284	--
ZIP Code 48837 *	General	Grand Ledge	19,189	--
ZIP Code 48838 *	General	Greenville	18,801	--
ZIP Code 48845	General	Hubbardston	937	1.40%
ZIP Code 48846	General	Ionia	22,470	33.64%
ZIP Code 48849	General	Lake Odessa	5,904	8.84%
ZIP Code 48851	General	Lyons	2,394	3.58%
ZIP Code 48860	General	Muir	1,309	1.96%
ZIP Code 48861 *	General	Mulliken	1,544	--
ZIP Code 48865	General	Orleans	1,756	2.63%
ZIP Code 48870	P.O. Box	Palo	132	0.20%
ZIP Code 48873	General	Pewamo	1,535	2.30%
ZIP Code 48875	General	Portland	10,582	15.84%
ZIP Code 48881	General	Saranac	5,438	8.14%
ZIP Code 48890 *	General	Sunfield	2,073	--
ZIP Code 48894 *	General	Westphalia	2,364	--
ZIP Code 49302 *	General	Alto	8,845	--
ZIP Code 49325 *	General	Freeport	2,090	--
ZIP Code 49331 *	General	Lowell	18,023	--

* Indicates a Multi County ZIP Code. These ZIP Codes partially cross over into Ionia, MI, but will mostly cover area in a different County. Not included in % of Population calculations.

Important Ionia, MI Information

Ionia County, MI Covers 22 ZIP Codes. This includes 11 General ZIP Codes, 2 PO Box ZIP Codes, and 0 Unique (reserved for Business and Volume Mail Receivers). There are also 9 Multi County ZIP Codes. These records are assigned a different primary county, but they partially cover area in Ionia County.

The population for Ionia County is 66,804, according to the U.S. Census. Population Density is 116.99 persons per square mile. With 24,638 Housing Units, the Average Household Size is 2.58 persons. There are 23,108 Family Households with an Average Family Size of 2.88 persons. 5.24% of the population is without Health Insurance. The 56.34% Employment Rate is 3.46% above the national average of 59.8%.46,581 people aged 25+ have some educational achievement, with 18.02% (or 8,395 people) having attained a Bachelor's Degree or higher.More Demographics are available below.

There are 3 area codes serving this area including517, 616 and 989. Ionia is also located in the Eastern timezone and the current local time is shown above.

Ionia is part of the Grand Rapids-Wyoming-Kentwood, MI Core Based Statistical Area (CBSA). Its CBSA Code is 24340.It is classified as a metro area, which means the combined population is 50,000 or more (at its core).

CBSAs are defined by the OMB as geographic areas that have at least one core with a population of 10,000 or more (for a micro area) and adjacent territory with a high degree of social and economic integration. CBSA codes are commonly used to accurately file Medicare claims and to verify applicable incentives using a patient's ZIP Code.

ZIP Codes in Ionia, MI have 24,166 Residential mailboxes and 1,033 Business mailboxes.There are 922 businesses with a total of 12,582 employees. That is an average of 13.6 employees per business. Annual payroll for these businesses is $543,587,000. Other Demographics

Ionia County Demographic Profile

Population & People

Total Population

66,804

Income

Median Household Income

$73,436

Housing

Total Housing Units

24,638

Health

Without Healthcare Coverage

5.24%

Business & Economy

Total Businesses

922

Families

Total Households

23,108

Employment

Employment Rate

56.34%

Education

Bachelor's Degree or Higher

18.02%

Total Population: Total number of people from the 2020 U.S. Census for Ionia, MI. This reflects the exact count of this area at that point in time, not future estimates, regardless of citizenship or immigration status. It is intended to count all persons living within the geographic area, not just those present on the day of the census.	66,804
Current Population Estimate: This field gives the estimated household population for All ZIP Codes in Ionia, MI. This is derived from known delivery information, household occupancy rates, household size, and more to come up with an accurate estimation for the current population. IMPORTANT: This does not include population totals for persons in nursing homes, correctional facilities, or other institutions. This is an estimation of the household population based on US Postal Service delivery information.	62,218
Total Households: Total number of Households from the 2020 U.S. Census for Ionia, MI. A Household includes everyone living in a residential housing unit. This includes families, roommates in a single residence, or a person living alone.	23,108
Total Housing Units: The total number of Housing Units is the number of occupied units + the number of vacant units. Ownership is defined by whether the unit is occupied by an owner or by a tenant. Owner occupancy means that the owner lives in the unit. This value comes from the 2020 U.S. Census and is not a projection or estimate.	24,638
Average Household Size: The Average Household Size, is obtained by dividing the number of people in Households (excluding those in group quarters, nursing home, prisons, and dorm rooms) by the number of Households. A Household includes everyone living in a residential unit. Those who do not live in a household are classified as living in group accommodation. This value is an estimate from the U.S. Census ACS (American Community Survey) and is updated yearly.	2.58
Average Family Size: Average Family Size is calculated by dividing the number of people in a Family Household by the number of Family Households. The U.S. Census Bureau defines family households as households consisting of two or more individuals who are related by birth, marriage, or adoption. They also may include other unrelated people. Non-family households consist of people who live alone or who share their residence with unrelated individuals. The Average Family Size only looks at the households classified as Family Households. This value is an estimate from the U.S. Census ACS (American Community Survey) and is updated yearly.	2.88

Other Ionia Demographics

# Residential Mailboxes: The number of active residential delivery mailboxes and centralized units. This excludes PO Boxes and all other contract box types.	24,166
# Business Mailboxes: The number of active business delivery mailboxes and centralized units. This excludes PO Boxes and all other contract box types.	1,033
Total Delivery Receptacles: The total number of delivery receptacles. This includes curb side mailboxes, centralized units, PO Boxes, NDCBU, and contract boxes. This count is for Residential and Business combined.	29,533
Single Family Delivery Units: Total count of single family mail delivery receptacles; generally analogous to homes.	21,052
Multi Family Delivery Units: Total count of multifamily mail delivery receptacles; generally analogous to apartments.	1,392

# of Businesses: The total number of Business Establishments. Data taken from Business Census 2023.	922
1st Quarter Payroll: The total payroll for the first quarter. Data taken from Business Census 2023.	$126,087,000
Annual Payroll: The total annual payroll . Data taken from Business Census 2023.	$543,587,000
# of Employees: The total number of employees for all ZIP Codes in this City. Data taken from Business Census 2023.	12,582

Sum of all ZIP Codes assigned Ionia, MI as their primary County.

References

U.S. Postal Service [Last Updated: 7/1/2025], https://www.usps.com
ZIP-Codes.com Internal Data Creation [Last Updated: 7/1/2025], https://www.zip-codes.com
U.S. Geological Survey [Updated as needed], https://www.usgs.gov
U.S. Census [Updated Yearly], https://www.census.gov
U.S. Census 2020 [Decennial] [Last Updated: 5/25/2023], https://www.census.gov