| Business | Phone |
| Cumby Elementary School 101 Sayle St, Cumby 75433 | (903) 994-2260 |
| Cumby Independent School Dist 101 Sayle St, Cumby 75433 | (903) 994-2261 |
| Miller Grove School 7819 Fm 275 S, Cumby 75433 | (903) 459-3319 |
| Miller Grove School 7819 Farm Road 275 S, Cumby 75433 | (903) 459-3288 |