Ionia, IA ZIP code
The ZIP code for Ionia, Iowa is 50645. It is in Chickasaw County.
- Population in these ZIPs
- 1,193
- Avg. median income
- $64,400population-weighted
- Typical home value
- $257,200population-weighted
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Ionia, IA ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 50645 | 1,193 | $64,408 | $257,200 |
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 near Ionia
- Nashua 7 mi
- New Hampton 8 mi
- Frederika 12 mi
- Charles City 12 mi
- Alta Vista 12 mi
- Plainfield 12 mi
- Colwell 12 mi
- Fredericksburg 12 mi
- Lawler 16 mi
- Tripoli 17 mi
- Waverly 17 mi
- Elma 18 mi
Frequently asked questions
What is the ZIP code for Ionia, IA?
The ZIP code for Ionia, IA is 50645.
What county is Ionia, Iowa in?
Ionia ZIP codes are in Chickasaw County.