List of Ecoregions defined as mostly Cropland

8.2.1 Southeastern Wisconsin Till Plains 8.2.3 Central Corn belt Plains
8.5.2 Mississippi alluvial Plain 9.2.3 Western Corn Belt Plains
9.2.2 Lake Agassiz Plain 9.4.2 Central Great Plains


For more information regarding U.S. Ecoregions Level III, please follow this link.