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 Hillside National Wildlife Refuge is 63.018 square kilometers.
The area of Chincoteague National Wildlife Refuge is 56.656 square kilometers.
The area of Wheeler National Wildlife Refuge is 141.64 square kilometers.
The area of Copalis National Wildlife Refuge is 246,048.87048192 square meters.
The area of Sherburne National Wildlife Refuge is 124.238 square kilometers.