Black Hills State University (BHSU) is the U.S. state of South Dakota's third largest comprehensive public university, offering both undergraduate and graduate programs. The 123-acre (50 ha) campus is located in Spearfish. Close to 4,500 students attend classes at this campus, as well as sites in Rapid City, Pierre, and through distance offerings. Enrollment comes from all 66 counties in South Dakota, 44 states, and 29 countries. BHSU is governed by the South Dakota Board of Regents.