The area of Hiddenwood National Wildlife Refuge is 2,731,628.08512 square meters.
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 Arrowwood National Wildlife Refuge is 64.483 square kilometers.
The area of Hanalei National Wildlife Refuge is 3,710,967.3393408 square meters.
The area of Felsenthal National Wildlife Refuge is 262.649 square kilometers.
The area of Modoc National Wildlife Refuge is 28.328 square kilometers.
The area of Rydell National Wildlife Refuge is 8,579,335.615488 square meters.
The area of Breton National Wildlife Refuge is 52.609 square kilometers.
The area of Camas National Wildlife Refuge is 42.808 square kilometers.
The area of Tishomingo National Wildlife Refuge is 66.627 square kilometers.
The area of Featherstone National Wildlife Refuge is 1,315,228.33728 square meters.