Wash. Rev. Code § 36.32.052
(1) Beginning in 2022, any noncharter county with a population of four hundred thousand or more must have a board of commissioners with five members, and must use district nominations and district elections for its commissioner positions, in accordance with RCW 36.32.050.
[ 2018 c 301 s 3.]
Findings—Short title—2018 c 301: See notes following RCW 36.32.051.