S.C. Code Ann. § 63-9-40: Jurisdiction; venue.

(A) The family court has exclusive jurisdiction over all proceedings held pursuant to this article. Proceedings for adoption by residents of this State may be brought in the family court of the county in which the petitioner resides or is in military service, or in the county in which the child resides or is born. For nonresidents of this State proceedings for adoption must be brought in the county in which the child resides, in which the child is born, or in which the agency having custody of the child is located.

(B) The family court may order a change of venue as in civil proceedings in this State.