| Business | Phone |
| Gregory Elementary School 505 Logan Ave, Gregory 57533 | (605) 835-8771 |
| Gregory High School 707 Rosebud Ave, Gregory 57533 | (605) 835-9672 |
| Gregory Superintendent Ofc 707 Rosebud Ave, Gregory 57533 | (605) 835-9651 |
| Iona Elementary School Rr 5, Gregory 57533 | (605) 835-8178 |