Mo. Rev. Stat. § 41.890
For the purposes of student resident status, military personnel, when stationed within the state under military orders, their spouses, and their unemancipated children under twenty-four years of age who enroll in a Missouri community college, Missouri college, or Missouri state university shall be regarded as holding Missouri resident status for undergraduate and graduate degree programs.
(L. 2005 H.B. 348 § 41.1016 merged with S.B. 252 § 41.1016, A.L. 2025 H.B. 419)