Tennessee Code Title 6. Cities and Towns § 6-54-131

(a) Notwithstanding another law or private act to the contrary, and upon approval under subsection (c), a member of the governing body of a municipality shall not simultaneously serve as a member of the governing body of any county in which the municipality is located during the member's term of office.

(b) Notwithstanding subsection (a), a member of the governing body of a municipality simultaneously serving on the governing body of a county on April 22, 2024, may serve out the remainder of the member's terms of office.

(c) This section applies to a municipality that is located, in whole or in part, in a county with a population of more than two hundred thousand (200,000), according to the 2020 or a subsequent federal census, and that approves this section by a two-thirds (2/3) vote of the entire governing body of the municipality.

(d) As used in this section, “municipality” means an incorporated city or town.