| Business | Phone |
| Allegan Street Elementary 313 W Allegan St, Otsego 49078 | (269) 692-6069 |
| Dix Street Elementary 503 Dix St, Otsego 49078 | (269) 692-6099 |
| Ostego Superintendents Office 313 W Allegan St, Otsego 49078 | (269) 694-5131 |
| Otsego Baptist Academy 247 E Allegan St, Otsego 49078 | (269) 694-6738 |
| Otsego High School 540 Washington St, Otsego 49078 | (269) 692-6166 |
| Otsego Public Schools Supt 313 W Allegan St, Otsego 49078 | (269) 692-6068 |
| Otsego Public Schools 538 Washington St, Otsego 49078 | (269) 692-6066 |
| Otsego Special Education 538 Washington St, Otsego 49078 | (269) 692-6233 |
| St Margaret's School 736 S Farmer St, Otsego 49078 | (269) 694-2951 |