| Business | Phone |
| Charles City Sch Dist Computer 1 Comet Dr, Charles City 50616 | (641) 257-6515 |
| Alternative High School 1717 Clark St, Charles City 50616 | (641) 257-6585 |
| Special Education Office 1406 N Grand Ave, Charles City 50616 | (641) 257-6572 |
| Comprehensive Systems Inc 910 1st Ave, Charles City 50616 | (641) 228-4182 |