| Business | Phone |
| Blackduck Community Education 156 1st St Ne, Blackduck 56630 | (218) 835-5241 |
| Blackduck High School 156 1st St Ne, Blackduck 56630 | (218) 835-5210 |
| Blackduck Public Schools 156 1st St Ne, Blackduck 56630 | (218) 835-5209 |
| Blackduck Public Schools Dist 156 1st St Ne, Blackduck 56630 | (218) 835-5200 |
| Blackduck School Po Box N, Blackduck 56630 | (218) 835-5200 |