Arkansas Code
Subchapter 3 - Metropolitan or Regional Planning Commissions
§ 14-17-302. Authority generally

Any two (2) or more cities of the first class, cities of the second class, incorporated towns, or counties, or other civil subdivisions having adjoining planning jurisdictions, or any counties and cities adjacent to or within the county may jointly cooperate in the exercise and performance of planning powers, duties, and functions as provided by state law for cities and counties.