1. When in any city as described in section 184.600 it has been decided by vote in the manner provided in section 184.600 that a tax shall be levied for the metropolitan zoo district, then the mayor of the city shall appoint nine members to the metropolitan zoo district board, with the approval of the city council. Such board members shall serve without compensation for a term of three years and until their successors are appointed and qualified, except that of the initial appointments three shall be for a term of one year, three shall be for a term of two years, and three shall be for a term of three years. Any vacancy shall be filled by the mayor, with the approval of the city council, for the unexpired term. Each member appointed shall have been a qualified voter of the city for at least one year immediately before his appointment and shall continue to reside therein during his tenure in office. The board shall elect its own chairman, secretary and such other officers that it deems necessary and it may make such rules, regulations and bylaws to effectuate its purposes it deems necessary.

2. If an area outside the city votes to join the district, then such area shall be entitled to proportional representation on the board in accordance with its population to the population of the city provided such area shall be entitled to at least one representative on the board. The county clerk shall determine the number of additional representatives by dividing the population of the city based on the last census by nine to produce the quotient and shall allocate to an area that has voted to join the district one representative per quotient or part thereof which representative or representatives shall be in addition to the nine representatives from the city. The county commission shall appoint board members who shall have resided in the area outside the city for terms of three years.