| Business | Phone |
| Delphos City Schools Supt 227 N Jefferson St, Delphos 45833 | (419) 692-6466 |
| Franklin Elementary School 310 E 4th St, Delphos 45833 | (419) 692-8766 |
| Jefferson Middle School 227 N Jefferson St, Delphos 45833 | (419) 695-2523 |
| Jefferson Senior High School State Route 66, Delphos 45833 | (419) 695-1786 |
| Landeck Elementary School 14750 Landeck Rd, Delphos 45833 | (419) 695-3185 |
| Mennonite Christian Day School 3666 Grubb Rd N, Delphos 45833 | (419) 339-6301 |
| Notre Dame Convent School 429 E 2nd St, Delphos 45833 | (419) 692-7641 |