Bison, SD

ZIP code 57620 covers the town of Bison, South Dakota, a small rural community known for its agricultural economy. Located in Perkins County, one of the most prominent landmarks in the area is the Slim Buttes, a historic site where a battle between Native American tribes and the U.S. Army took place in 1876. The town also features a post office and several local businesses serving the needs of the residents.