Nev. Rev. Stat. § 266.060
1. Whenever any city of population category two attains the population of 50,000 or more, or any city of population category three attains the population of 5,000 or more, and that fact is ascertained:
(b) At the option of the city council, by the Governor, pursuant to NRS 360.285, for 2 consecutive years,
the Governor shall declare, by public proclamation, that city to be of population category one or two, and the city thus changed is governed by the provisions of this chapter applicable to cities of the higher population category.
[8:125:1907; RL § 774; NCL § 1107]—(NRS A 1985, 1172; 2001, 625, 2702; 2003, 14)