Mo. Const. art. III, § 4. Qualifications of representatives

Each representative shall be twenty-four years of age, and next before the day of his election shall have been a qualified voter for two years and a resident of the county or district which he is chosen to represent for one year, if such county or district shall have been so long established, and if not, then of the county or district from which the same shall have been taken. [Effective - 27 Feb 1945 , see footnote]