Ionia County, Michigan ZIP codes
13 ZIP codes are in Ionia County, plus 9 that cross in from neighboring counties. It's part of the Grand Rapids-Wyoming-Kentwood, MI metro area.
- ZIP codes
- 13
- Population in these ZIPs
- 65,984
- Avg. median income
- $75,400population-weighted
- Cities & towns
- 13
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Ionia County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 48809 | Belding | 11,038 | $71,071 | $272,100 |
| 48815 | Clarksville | 2,364 | $85,962 | $305,800 |
| 48845 | Hubbardston | 1,218 | $86,042 | $203,300 |
| 48846 | Ionia | 21,613 | $66,742 | $228,900 |
| 48849 | Lake Odessa | 5,723 | $80,313 | $265,800 |
| 48851 | Lyons | 2,462 | $65,726 | $251,000 |
| 48860 | Muir | 1,339 | $50,600 | $242,200 |
| 48865 | Orleans | 1,884 | $70,039 | $256,000 |
| 48870 | Palo | 194 | $34,290 | $93,500 |
| 48873 | Pewamo | 1,250 | $86,250 | $279,600 |
| 48875 | Portland | 11,400 | $94,216 | $291,000 |
| 48881 | Saranac | 5,499 | $78,607 | $302,400 |
| 48887 PO Box | Smyrna | — | — | — |
ZIP codes partly in Ionia County
These ZIP codes are mostly in a neighboring county but cover part of Ionia County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 48834 | Fenwick | Montcalm County | 2,139 | $53,958 | $242,000 |
| 48837 | Grand Ledge | Eaton County | 19,947 | $96,517 | $299,800 |
| 48838 | Greenville | Montcalm County | 18,212 | $70,176 | $276,900 |
| 48861 | Mulliken | Eaton County | 1,774 | $89,412 | $234,100 |
| 48890 | Sunfield | Eaton County | 2,055 | $79,444 | $247,200 |
| 48894 | Westphalia | Clinton County | 2,193 | $101,923 | $351,000 |
| 49302 | Alto | Kent County | 9,754 | $134,722 | $502,900 |
| 49325 | Freeport | Barry County | 2,596 | $90,472 | $317,400 |
| 49331 | Lowell | Kent County | 17,661 | $91,800 | $410,600 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Ionia County
Nearby counties
Frequently asked questions
How many ZIP codes are in Ionia County, Michigan?
13 ZIP codes are mainly in Ionia County, and 9 more ZIP codes from neighboring areas reach partly into it.
What cities are in Ionia County?
ZIP codes in Ionia County use the city names Belding, Clarksville, Hubbardston, Ionia, Lake Odessa, Lyons, Muir, Orleans, Palo, Pewamo, Portland and Saranac and others.
What metro area is Ionia County in?
Ionia County is part of the Grand Rapids-Wyoming-Kentwood, MI metropolitan statistical area.