| 68a Cumberland Plateau |
| 68c Plateau Escarpment |
| 69d Dissected Appalachian Plateau |
| 69e Cumberland Mountain Thrust Block |
| 70b Monongahela Transition Zone |
| 70d Knobs-Lower Scioto Dissected Plateau |
| 70f Ohio/Kentucky Carboniferous Plateau |
| 70g Northern Forested Plateau Escarpment |
| 70h Carter Hills |
| 71a Crawford-Mammoth Cave Uplands |
| 71b Mitchell Plain |
| 71c Knobs-Norman Upland |
| 71d Outer Bluegrass |
| 71e Western Pennyroyal Karst Plain |
| 71f Western Highland Rim |
| 71g Eastern Highland Rim |
| 71h Outer Nashville Basin |
| 71k Hills of the Bluegrass |
| 71l Inner Bluegrass |
| 72a Wabash-Ohio Bottomlands |
| 72c Green River-Southern Wabash Lowlands |
| 72h Caseyville Hills |
| 73a Northern Holocene Meander Belts |
| 74a Bluff Hills |
| 74b Loess Plains |