| List Rank | SD Rank | Name | Elevation | Saddle | Prominence | Line Parent | Isolation | Proximate Parent | County | Quadrangle | LiDAR |
| Gregory County HP | 2,365' | 2,295' | 70' | 4027 | 42.25 | Red Hills | Gregory | Paxton - Map | |||
| 1 | 270 | Buffalo Buttes, West | 2,210' | 1,870' | 340' | Iona Hills | 4.32 | Iona Hills | Gregory | Rattlesnake Butte East - Map | |
| Buffalo Buttes, East | 2,130' | 1,870' | 260' | Buffalo Buttes, West | 1.08 | Buffalo Buttes, West | Gregory | Dixon - Map | |||
| Devils Grave Hill | 1,970' | 1,890' | 80' | 4027 | 11.83 | 1990 | Gregory | Bonesteel - Map | |||
| Red Rock | 1,430' | 1,390' | 40' | 4027 | 4.96 | Charles Mix County HP | Gregory | Lucas NW - Map |