(A) Membership. The common council shall consist of the mayor elected at large and two aldermen elected from and by the voters of each ward of the municipality.
(B) Term. The term of office shall be for two years, unless a municipality adopts an ordinance establishing the term of office to be three, four, or five years. The mayor and aldermen shall hold office until successors are elected and qualified. At the first election of aldermen, the council shall stagger the initial terms of the alderman in each ward to provide that the two aldermen are not up for reelection in the same year. A person may hold office for more than one term. A vacancy on the common council shall be filled as provided in SDCL §§ 9-13-14.1 or 9-13-14.2
(SDCL § 9-8-4)
(C) Eligibility. No person is eligible to be nominated, elected, or appointed as a mayor or as an alderman unless such person is a citizen of the United States, a voter of and resident of the municipality, and, if an alderman, a voter of and resident of the ward for which such person is to hold office.