Communication Service for the Deaf, Inc. (CSD) is a private, non-profit telecommunications and human services organization designed and administered exclusively for and by deaf and hard of hearing people.
CSD was founded in 1975 and is dedicated to providing broad-based services, ensuring public accessibility and increasing public awareness of issues affecting deaf and hard of hearing individuals. CSD provides human services for the deaf and hard of hearing. CSD also provides telecommunication relay services to thirty states, and, at various locations provides interpreting services, video interpreting services, and interpreter training.
CSD’s headquarter office in South Dakota: 102 N. Krohn Place, Sioux Falls, SD 57103, 605-367-5760 (SD-Voice), 605-367-5761 (SD-TTY)