S.D. Codified Laws § 11-12-2
No adult oriented business established after June 30, 2008, may be located within one-fourth mile of a child welfare agency, a private or public school, a public playground, a public recreational facility, a residence, or a place of worship. For the purposes of this section, measurements shall be made in a straight line in all directions, without regard to intervening structures or objects, from the nearest point on the property line of a parcel containing an adult oriented business to the nearest point on the property line of a parcel containing a child welfare agency, a private or public school, a public playground, a public recreational facility, a residence, or a place of worship. An adult oriented business lawfully operating in conformity with this section does not violate this section if a child welfare agency, a private or public school, a public playground, a public recreational facility, a residence, or a place of worship subsequently locates within one-fourth mile of the adult oriented business. A violation of this section is a Class 1 misdemeanor. Each day of violation constitutes a separate offense.
SDCL 11-12-2