Nev. Const. art. 15, § 13

Census by legislature and Congress: Basis of representation in houses of legislature. The enumeration of the inhabitants of this State shall be taken under the direction of the Legislature if deemed necessary in AD Eighteen hundred and Sixty five, AD Eighteen hundred and Sixty seven, AD Eighteen hundred and Seventy five, and every ten years thereafter; and these enumerations, together with the census that may be taken under the direction of the Congress of the United States in A.D. Eighteen hundred and Seventy, and every subsequent ten years shall serve as the basis of representation in both houses of the Legislature.