| Business | Phone |
| Heartland Academy 104 W Marshall Ave, Warren 56762 | (218) 965-4095 |
| Warren Elementary School 224 E Bridge Ave, Warren 56762 | (218) 745-4441 |
| Warren Jr-Sr High School 224 E Bridge Ave, Warren 56762 | (218) 745-4636 |
| Warren Superintendent Office 224 E Bridge Ave, Warren 56762 | (218) 745-5393 |
| Warren/Alavaro/Oslo Public 224 E Bridge Ave, Warren 56762 | (218) 745-4646 |