| Business | Phone |
| Mille Lacs Band Of Ojibwe Schl 43521 Oodena Dr, Onamia 56359 | (320) 532-4690 |
| Nay-Ah-Shing School 43651 Oodena Dr, Onamia 56359 | (320) 532-4695 |
| Onamia Area Learning Ctr 510 Main St, Onamia 56359 | (320) 532-4423 |
| Onamia Elementary School 35465 125th Ave, Onamia 56359 | (320) 532-4176 |
| Onamia High School 35465 125th Ave, Onamia 56359 | (320) 532-4175 |
| Onamia Public School Onamia 56359 | (320) 532-4658 |
| Onamia School District 35465 125th Ave, Onamia 56359 | (320) 532-4174 |