The South Dakota Department of Social Services maintains a Voluntary Adoption Registry of adoptees and natural parents who have consented to the release of identifying information about themselves. The purpose of the registry is to facilitate voluntary contact between adoptees 18 years or older who were born in South Dakota and their birth parents.
Siblings of the adopted person 18 or older may also register. The registry is passive, meaning the Department of Social Services does not search for adoptees or for birth parents whose names are not included in the registry.