South Dakota Age of Majority Law

Minors – Age of Majority – South Dakota

Minors are natural male persons and natural female persons under eighteen years of age. The periods thus specified must be calculated from the first minute of the day on which persons are born, to the same minute of the corresponding day completing the period of minority.

Title 26, Chap. 26-1, §26-1-1

Age of Majority
18 (§26-1-1)

Emancipation
Upon marriage or age of majority; by express agreement if no longer dependent for support or active military duty (25-5-19; 25-5-24)

Contracts
Contracts binding unless minor disaffirms as permitted; may make contract except re real property or personal property not under immediate control;
may be disaffirmed if minor under 16 before age of majority or within one year afterwards; if 16 or older, can only disaffirm with restoration of consideration plus interest (26-2-1, et seq.)

Ability to Sue
Through a guardian or conservator or by a guardian ad litem (15-6-17(c))

Consent to Medical Treatment
Minors of any age may consent to treatment for venereal disease (§34-23-16)