The Outer Banks (often abbreviated as OBX) are a 200-mile-long (320 km) string of barrier islands and spits off the coast of North Carolina and southeastern Virginia. This fragile, narrow chain separates the Atlantic Ocean from the mainland's shallow sounds and is one of the most geographically dynamic areas in the United States.
Latitude/Longitude: Approximately 35.5° N, 75.5° W.
Boundary: They begin at the Virginia border (Sandbridge) and stretch south to Cape Lookout. Some definitions extend this to include Cape Fear further south.
Positioning: The islands form a "bow-like" arc that curves southeastward toward Cape Hatteras—the easternmost point of North Carolina—before curving back southwest toward the mainland.
Separation from Mainland: The islands are separated from the North Carolina mainland by a series of wide, shallow sounds, including the Currituck, Albemarle, Croatan, Roanoke, and Pamlico Sounds. At its widest point, the Pamlico Sound is about 30 miles across.
The Outer Banks are characterized by their shifting nature, influenced heavily by wind, waves, and tides.
Barrier Island Dynamics: Unlike many islands, the Outer Banks are essentially giant moving sandbars. They are not anchored to offshore coral reefs, making them highly susceptible to erosion. Inlets (gaps between islands) frequently open and close during major hurricanes and storms.
Dunes and Elevation: The landscape is generally low-lying, with an average elevation of less than 20 feet above sea level. However, it features massive sand dunes, most notably at Jockey’s Ridge State Park, which contains the tallest natural living sand dune system on the East Coast (reaching heights of 80–100 feet).
Vegetation and Ecosystems: * Beaches: Wide, sandy Atlantic-facing beaches.
Maritime Forests: Dense thickets of live oak, cedar, and pine that have adapted to salt spray and high winds.
Salt Marshes: Found on the sound side, these are critical habitats for shellfish, birds, and fish.
The "Graveyard of the Atlantic": The waters off the Outer Banks are notorious for shipwrecks. This is caused by the collision of the cold Labrador Current and the warm Gulf Stream just off Cape Hatteras, which creates dangerous shoals (like Diamond Shoals) and unpredictable weather.
Northern Beaches (Currituck & Bodie Islands): Includes Corolla (famous for wild Spanish Colonial Mustangs), Duck, Kitty Hawk (site of the Wright Brothers' first flight), and Nags Head.
Roanoke Island: Nestled between the Outer Banks and the mainland, it is home to the town of Manteo and the historic "Lost Colony."
Hatteras Island: A long, narrow stretch that includes the Cape Hatteras National Seashore and the iconic black-and-white striped Cape Hatteras Lighthouse.
Ocracoke Island: Accessible only by ferry or private plane, it is known for its remote village and history as a hideout for the pirate Blackbeard.
Southern Banks (Cape Lookout): Includes the uninhabited Core and Shackleford Banks, preserved in their natural state.
The region has a humid subtropical climate but is heavily moderated by the Atlantic Ocean. It is the most hurricane-prone area north of Florida; the islands act as a natural "buffer" for the North Carolina mainland, absorbing the brunt of storm surges and waves.