(1) No person shall be eligible for the office of mayor unless such person has resided within the municipality for at least one (1) year next preceding the election.
(2) No person shall be eligible for the office of alderman unless such person has resided within the ward for at least one (1) year next preceding the election.
(3) Residence within any area annexed in a year preceding an election shall be counted in meeting the residence requirement of this section.
(4) Any officer moving from such officer's ward, in the case of an alderman, or moving from the municipality, in the case of the mayor, during the term of office shall be presumed to have vacated the office, and it shall be declared vacant, and filled as provided in § 6-3-107.