S.D. Codified Laws § 22-35-6
Entering or refusing to leave property after notice--Misdemeanor
Any person who, knowing that he or she is not privileged to do so, enters or remains in any place where notice against trespass is given by:
(1) Actual communication to the person who subsequently commits the trespass;
(2) Posting in a manner reasonably likely to come to the attention of trespassers; or
(3) Fencing or other enclosure which a reasonable person would recognize as being designed to exclude trespassers;
Source: SL 1976, ch 158, § 35-2 ; SL 1977, ch 189, § 71; SL 2005, ch 120, § 290.