Ionia, Michigan
Ionia, Michigan | |
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Aerial view of Ionia, Michigan in 2025 | |
Interactive map of Ionia, Michigan | |
Ionia Ionia | |
| Coordinates: 42°58′37″N 85°04′29″W / 42.976821°N 85.074633°W | |
| Country | United States |
| State | Michigan |
| County | Ionia |
| Settled | May 1833 |
| Platted | 1841 |
| Incorporated as a village | 1865 |
| Organized into a city | 1873 |
| Government | |
| • Mayor | John R. Milewski, II |
| Area | |
• Total | 5.542 sq mi (14.354 km2) |
| • Land | 5.412 sq mi (14.016 km2) |
| • Water | 0.131 sq mi (0.340 km2) 2.36% |
| Elevation | 633 ft (193 m) |
| Population (2020) | |
• Total | 13,378 |
• Estimate (2024) | 12,265 |
| • Density | 2,472.1/sq mi (954.48/km2) |
| Time zone | UTC−5 (Eastern (EST)) |
| • Summer (DST) | UTC−4 (EDT) |
| ZIP Code | 48846 |
| Area code | 616 |
| FIPS code | 26-40860 |
| GNIS feature ID | 1626521 |
| Website | cityofionia.org |
Ionia (/aɪˈoʊnjə/ eye-OH-nyə) is the largest city in and the county seat of Ionia County, Michigan, United States. The population was 13,378 at the 2020 census, and was estimated at 12,265 in 2024. Every July it hosts what is said to be the world's largest free-admission fair, the Ionia Free Fair. The city is mostly within Ionia Township, with small portion extending into Easton Township and Berlin Township, but is politically autonomous of the townships. The city is named after Ionia, a historic region in Greece.