Black Hills State University (BHSU) is a public university in Spearfish, South Dakota. Close to 4,500 students attend classes at its 123-acre (50 ha) campus in Spearfish, at sites in Rapid City and 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.