| Black Hills |
| Black Hills Foot Slopes |
| Central Black Glaciated Plains |
| Central Dark Brown Glaciated Plains |
| Dakota-Nebraska Eroded Tableland |
| Glacial Lake Agassiz, Red River Valley |
| Glacial Lake Dakota |
| Iowa and Missouri Deep Loess Hills |
| Loess Uplands |
| Mixed Sandy and Silty Tableland and Badlands |
| Nebraska Sand Hills |
| Northern Rolling High Plains, Eastern Part |
| Northern Rolling Pierre Shale Plains |
| Pierre Shale Plains |
| Prairie Coteau |
| Rolling Soft Shale Plain |
| Rolling Till Prairie |
| Southern Black Glaciated Plains |
| Southern Dark Brown Glaciated Plains |
| Southern Rolling Pierre Shale Plains |
| Till Plains |