Mo. Rev. Stat. § 99.134
Beginning April 1, 1991, the provisions of this section shall apply to housing authorities of any city with a population of more than three hundred fifty thousand inhabitants which is located in more than one county. The authority shall consist of seven commissioners, appointed by the mayor of the city, with the advice and consent of the city council. One commissioner shall be appointed from each city council district and the seventh commissioner shall be a tenant of any housing project owned or operated by the housing authority. The tenant commissioner shall serve for three years, but only if he remains a tenant of any housing project owned or operated by the authority. Notwithstanding the provisions of this chapter to the contrary, a new authority shall be established under this section. The commissioners of the authority in office on April 1, 1991, shall be deemed members of the new authority and shall serve the remaining portion of their terms. The new members of the authority which bring the total number of members to seven shall serve for four years. Upon the completion of the term of any commissioner, except the tenant commissioner, his replacement shall be appointed for a period of four years. The mayor shall make appointments within ninety days of the vacancy occurring. If no appointment has been made within ninety days by the mayor, the vacancy shall be filled by a majority of the city council present and voting at a regular meeting.
(L. 1990 H.B. 1510, A.L. 1995 S.B. 16)