The area of Oaks Bottom Wildlife Refuge is 571,497.063971328 square meters.
The area of Big Oaks National Wildlife Refuge is 202.343 square kilometers.
The area of Chandalash Wildlife Refuge is 350 square kilometers.
The area of Chychkan Wildlife Refuge is 366 square kilometers.
The area of Choctaw National Wildlife Refuge is 17.07 square kilometers.
The area of Aransas National Wildlife Refuge is 464 square kilometers.
The area of Driftless Area National Wildlife Refuge is 3,286,006.946424576 square meters.
The area of Desecheo National Wildlife Refuge is 1,456,868.312064 square meters.
The area of Catahoula National Wildlife Refuge is 101.827 square kilometers.
The area of Tetlin National Wildlife Refuge is 2,833.034 square kilometers.
The area of Toppenish National Wildlife Refuge is 8,004,682.003507201 square meters.
The area of Pahranagat National Wildlife Refuge is 21.772 square kilometers.
The area of Aroostook National Wildlife Refuge is 21.254 square kilometers.