Piedmont, SD

ZIP code 57769 covers the area of Porcupine, South Dakota, located on the Pine Ridge Indian Reservation. The most notable landmark in this area is the Wounded Knee Massacre National Historic Landmark, where a tragic event took place in 1890 between Native Americans and the U.S. Army. Another significant location is the Red Cloud Indian School, a boarding school established in the late 19th century by the Jesuits.