| Units |
| National Battlefields | Fort Necessity |
| National Historical Parks | First State (Multi-State) |
| Independence | |
| Valley Forge | |
| National Historic Sites | Allegheny Portage Railroad |
| Edgar Allan Poe | |
| Eisenhower | |
| Friendship Hill | |
| Hopewell Furnace | |
| Steamtown | |
| National Memorials | Flight 93 |
| Johnstown Flood | |
| Thaddeus Kosciuszko | |
| National Military Parks | Gettysburg |
| National Recreation Area: | Delaware Water Gap (Multi-State) |
| National Scenic Trails | Appalachian (Multi-State) |
| Wild & Scenic Rivers | Middle Delaware (Multi-State) |
| Upper Delaware (Multi-State) |
| Non-Units |
| National Heritage Areas | Delaware & Lehigh Navigation Canal |
| Journey Through Hallowed Ground (Multi-State) | |
| Lackawanna Valley | |
| Oil Region | |
| Path of Progress | |
| Rivers of Steel | |
| Schuylkill River Valley | |
| Susquehanna | |
| National Historic Sites | Gloria Dei Church |
| National Historic Trails | Captain John Smith Chesapeake (Multi-State) |
| Lewis & Clark (Multi-State) | |
| National Scenic Trails | North Country (Multi-State) |
| National Memorials | Benjamin Franklin |
| Wild & Scenic Rivers | Lower Delaware (Multi-State) |
| White Clay Creek (Multi-State) | |
| Other Sites | Chesapeake Bay (Multi-State) |