What is the age to leave home without consent in Mississippi?

Mississippi laws are screwy regarding this subject. The age of majority in MS is actually 21. However, once a person reaches 18, they can enter into a property contract, sue in their own name, consent to their medial care, and do a whole slew of other things. I've never known of a case where an 18-year-old has left home and the police have drug them back. If you're under 18, you can't leave.