SDCL § 11-5-7: Flag--Display.

Any homeowner, regardless of any private covenants, restrictions, bylaws, rules, or requirements may display one portable, removable official United States flag, not larger than four and one-half feet by six feet and may additionally display the official South Dakota State flag or one portable, removable official flag, not larger than four and one-half feet by six feet, that represents the United States Army, Navy, Air Force, Marine Corps, Space Force, or Coast Guard, or a POW MIA flag. The additional flag must be equal in size to or smaller than the official United States flag.