Mo. Rev. Stat. § 50.380: Penalty.

Any county officer required to make such report who shall fail or neglect to comply with any provision of sections 50.340 to 50.370 shall forfeit his salary for that month, and be deemed guilty of a misdemeanor, and shall, upon conviction, be fined not less than fifty dollars nor more than five hundred dollars for each offense, and if he shall continue in default for three months, his office shall be deemed vacant and shall be filled as provided by law for filling vacancies therein.