Mont. Code Ann. § 35-16-209

Any corporation or district organized under the provisions hereof shall have the power to create subdivisions or subdistricts of said corporation or district, by geographical or other location, as shall best subserve the purposes of the corporation or district or the welfare of the membership of the corporation or district residing in the proposed subdivision or subdistrict, provided any property owned or acquired by the subdivision or subdistrict thus created shall at all times be the property of the corporation or district and its members and membership lands subject to the objects, purposes, and liabilities of the corporation or district, as herein provided.