Missouri Revised Statutes Title XXXIV. Juries § 494.400. Qualifications of jurors, selection, exclusions prohibited

All persons qualified for grand or petit jury service shall be citizens of the state and shall be selected at random from a fair cross section of the citizens of the county or of a city not within a county for which the jury may be impaneled, and all such citizens shall have the opportunity to be considered for jury service and an obligation to serve as jurors when summoned for that purpose, unless excused. A citizen of the county or of a city not within a county for which the jury may be impaneled shall not be excluded from selection for possible grand or petit jury service on account of race, color, religion, sex, national origin, or economic status.