US National Parks East of the Mississippi
There are only 14 US National Parks located east of the Mississippi River. While the vast majority of the 63 US national parks are in the West, the eastern parks are highly diverse, ranging from coastal islands and ancient mountains to vast wetlands and subterranean caves.
| Park Name | State(s) | Key Feature |
|---|---|---|
| Acadia | Maine | Rocky coastlines and granite peaks |
| Biscayne | Florida | Coral reefs and mangrove forests (95% water) |
| Congaree | South Carolina | Largest old-growth bottomland hardwood forest |
| Cuyahoga Valley | Ohio | Rural landscape along the Cuyahoga River |
| Dry Tortugas | Florida | Historic Fort Jefferson and crystal clear waters |
| Everglades | Florida | Largest tropical wilderness in the U.S. |
| Gateway Arch | Missouri* | Symbolic “Gateway to the West” |
| Great Smoky Mountains | TN / NC | Ancient mountains and biological diversity |
| Indiana Dunes | Indiana | Lake Michigan shoreline and rugged dunes |
| Isle Royale | Michigan | Remote island wilderness in Lake Superior |
| Mammoth Cave | Kentucky | The world’s longest known cave system |
| New River Gorge | West Virginia | Deep canyon and whitewater river |
| Shenandoah | Virginia | Blue Ridge Mountains and Skyline Drive |
| Voyageurs | Minnesota* | Network of water routes and boreal forest |
Geographic Breakdown
The “Border” Parks: Both Gateway Arch and Voyageurs sit right at the boundary. Gateway Arch is on the west bank of the Mississippi, but it is often categorized with eastern/central parks in regional planning.
Florida’s Trio: Florida is the only eastern state with three parks (Everglades, Biscayne, and Dry Tortugas), focusing heavily on marine and wetland ecosystems.
The Appalachian Spine: Several parks follow the ancient Appalachian mountain range, including Great Smoky Mountains (the most visited national park in the country), Shenandoah, and the recently redesignated New River Gorge.
The Great Lakes: Isle Royale and Indiana Dunes protect the unique ecosystems of the Great Lakes, featuring everything from isolated wolf–moose populations to some of the most biodiverse plant life in the midwest.
Why so few?
The disparity between East and West is largely due to history and land ownership. Much of the land east of the Mississippi was already privately owned or developed by the time the National Park Service was established in 1916. In the West, the federal government already owned vast tracts of “unclaimed” land, making it much easier to designate large areas for protection. Most eastern parks had to be meticulously pieced together through land donations or state-to-federal transfers.
