Place
- Northern Appalachian Plateau and Uplands1
- Northern Basin and Range1
- Northern Central Hardwood Forests1
- Northern Glaciated Plains1
- Northern Lakes and Forests1
- Northern Minnesota Wetlands1
- Northern Montana Glaciated Plains1
- Northern Piedmont1
- Northern Rockies1
- Northwestern Glaciated Plains1
- Northwestern Great Plains1
- Omernik Ecoregions1
- Ouachita Mountains1
- Ozark Highlands1
- Piedmont1
- Puget Lowland1
- S. Michigan/N. Indiana Drift Plains1
- Sierra Nevada1
- Snake River Basin/High Desert1
- South Central Plains1