| Business | Phone |
| Ionia County Circuit Court 100 W Main St, Ionia 48846 | (616) 527-5315 |
| Ionia County Dist Court Civil 101 W Main St, Ionia 48846 | (616) 527-5349 |
| Ionia County District Court 101 W Main St, Ionia 48846 | (616) 527-5346 |
| Juvenile Court 100 Main St, Ionia 48846 | (616) 527-5332 |
| Ionia County Friend Of Court 110 W Washington St, Ionia 48846 | (616) 527-5310 |
| Ionia County Judge Of Probate 100 W Main St, Ionia 48846 | (616) 527-5326 |