Article 1, Section 23 of the Missouri Constitution provides "that the right of every citizen to keep and bear arms in the defense of his home, person, and property, or when lawfully summoned in the aid of civil power, shall not be questioned."
Section 21.750, RSMo provides that a political subdivision, such as a city or town, may regulate the open carry and discharge of firearms. For copies of local ordinances, you may check with your city police department or clerk for assistance.
Additionally, Section 571.037 of the Missouri Revised Statutes pertains to Missouri’s open carry regulations.