Mid-Rivers Provides Local Telephone Service & Mid-Rivers Cellular Service in the Following Exchanges:
| Town | Telephone Prefix |
| Ashland | 983 (cellular) |
| Baker | 778 |
| Baker | 978 (cellular) |
| Bloomfield | 583 |
| Broadus | 935 (cellular) |
| Carlyle | 588 |
| Circle | 485 |
| Circle | 974 (cellular) |
| Custer | 856 |
| East Carlyle, ND | (701) 688 |
| East Fairview, ND | (701) 844 |
| Ekalaka | 775 |
| Ekalaka | 975 (cellular) |
| Fairview | 742 |
| Fallon | 486 |
| Glendive | 377, 345 |
| Glendive | 987 (cellular) |
| Grass Range | 428 |
| Grass Range | 928 (cellular) |
| Jordan | 557 |
| Jordan | 977 (cellular) |
| Lambert | 774 |
| Lambert | 914 (cellular) |
| Lavina | 636 |
| Lewistown | 535 |
| Lindsay | 584 |
| Melstone | 358 |
| Miles City | 234, 874 |
| Miles City | 934 (cellular) |
| Musselshell | 947 |
| North Lambert | 914 (cellular) |
| North Ryegate | 575 |
| Plevna | 772 |
| Plevna | 971 (cellular) |
| Richey | 773 |
| Richey | 979 (cellular) |
| Rock Springs | 354 |
| Roundup | 323 |
| Roy | 464 |
| Roy | 954 (cellular) |
| Ryegate | 568 |
| Savage | 776 |
| Sidney | 433, 488 |
| Sidney | 973 (cellular) |
| South Wolf Point | 525 |
| Terry | 635 |
| Vida South | 915 (cellular) |
| West Glendive | 687 |
| West Sidney | 798 |
| Wibaux | 796 |
| Winnett | 429 |
