| Units |
| National Historical Parks | Nez Perce (Multi-State) |
| National Historic Sites | Minidoka |
| National Monuments | Craters of the Moon |
| Hagerman Fossil Beds | |
| National Parks | Yellowstone (Multi-State) |
| National Preserves | Craters of the Moon |
| National Reserves | City of Rocks |
| Non-Units |
| National Historic Trails | California (Multi-State) |
| Lewis & Clark (Multi-State) | |
| Nez Perce (Multi-State) | |
| Oregon (Multi-State) | |
| National Scenic Trails | Continental Divide (Multi-State) |
| Pacific Northwest (Multi-State) | |
| National Geographic Trails | Ice Age Floods (Multi-State) |