| Business | Phone |
| Central Elementary School 1100 10th St, Onawa 51040 | (712) 433-1056 |
| Lark Elementary School 611 4th St, Onawa 51040 | (712) 433-1393 |
| Onawa High School 1314 15th St, Onawa 51040 | (712) 433-2453 |
| West Monona School Supt 1314 15th St, Onawa 51040 | (712) 433-2043 |
| Western Hills Area Ed Agcy 801 10th St # A, Onawa 51040 | (712) 423-2071 |