586
- 58601 Dickinson
- 58620 Amidon
- 58621 Beach
- 58622 Belfield
- 58623 Bowman
- 58625 Dodge
- 58626 Dunn Center
- 58627 Fairfield
- 58630 Gladstone
- 58631 Glen Ullin
- 58632 Golva
- 58634 Grassy Butte
- 58636 Halliday
- 58638 Hebron
- 58639 Hettinger
- 58640 Killdeer
- 58641 Lefor
- 58642 Manning
- 58643 Marmarth
- 58645 Medora
- 58646 Mott
- 58647 New England
- 58649 Reeder
- 58650 Regent
- 58651 Rhame
- 58652 Richardton
- 58653 Scranton
- 58654 Sentinel Butte
- 58655 South Heart
- 58656 Taylor