SDCL § 25-6-7: Venue of adoption proceedings.

A petition for adoption may be filed in the circuit court for any of the following counties:

(1) The county in which the adopting parent resides;

(2) The county in which the authorized agency having care, custody, or control, whether legal or physical, of the child involved is located; or

(3) The county in which the child involved was born or resides.