The Key West National Wildlife Refuge is a 189,497 acre (766.867 km²) National Wildlife Refuge located in Monroe County, Florida, between Key West, Florida and the Dry Tortugas . Only 2,019 acres (8.171 km²) of land are above sea level, on several keys within the refuge. These keys are unpopulated and are also designated as Wilderness within the Florida Keys Wilderness. The refuge was established to provide a preserve and breeding ground for native birds and other wildlife as well as to provide habitat and protection for endangered and threatened fish, wildlife, plants and migratory birds.