The Roberts County Sheriff's Department protects the rights of the citizens within its jurisdiction to be free from criminal attacks, to be secure in their possessions and to live in peace. The County Sheriff is also the contact mental health holds, burning bans, county jails/correctional facilities and fingerprinting (call for specifics).

Provides secure detention of juveniles who have allegedly committed a delinquent act and non-secure detention for alleged children in need of supervision. While in detention, the juvenile is provided educational and recreational opportunities. The educational services are provided by the Sioux Falls School District. Juveniles may be sentenced to the Center by the Courts for up to 90 days.

Provides safe and secure care and custody to juveniles ages 10-20 who have committed offenses classified as felonies or misdemeanors who are either going through the court system, awaiting placement, or serving a sentence.

911 emergency operators, adult detention, juvenile detention, and law enforcement services with jurisdiction within the exterior boundaries of the Cheyenne River Sioux Tribe.