| Business | Phone |
| Owosso City Clerk 301 W Main St, Owosso 48867 | (989) 725-0500 |
| Owosso City Hall 301 W Main St, Owosso 48867 | (989) 725-0599 |
| Owosso City Manager 301 W Main St, Owosso 48867 | (989) 725-0568 |
| Owosso City Mayor 301 W Main St, Owosso 48867 | (989) 725-0595 |