The area of Lassen National Forest is 4,331.528 square kilometers.
Lassen National Forest was created on 1905-06-02.
The area of Lassen Volcanic National Park is 430.796 square kilometers.
Lassen Peak National Monument was created in 1907.
The area of Prescott National Forest is 5,058.571 square kilometers.
The area of Ochoco National Forest is 3,439.828 square kilometers.
The area of Talladega National Forest is 1,588.662 square kilometers.
The area of Umpqua National Forest is 3,990.119 square kilometers.
The area of Conecuh National Forest is 339.373 square kilometers.
The area of Superior National Forest is 15,782.74 square kilometers.
The area of Kisatchie National Forest is 2,444.301 square kilometers.
The area of Boise National Forest is 10,570.389 square kilometers.
The area of Sawtooth National Forest is 8,498.398 square kilometers.