Iowa Code Title I. State Sovereignty and Management [Chs. 1-38D] § 28E.25. Expansion of district

Cities and unincorporated areas may join an established district upon the affirmative vote of the city council or county board of supervisors, whichever is applicable, and a tax may be levied for providing additional moneys for unified law enforcement services only upon the affirmative vote of registered voters of the city or unincorporated area voting in the manner provided in this subchapter. A city or unincorporated area joining a district shall contract with the district for services until the beginning of a fiscal year when the city or unincorporated area may become a member.