Miss. Code Ann. § 77-5-105

Power districts, the boundaries of which shall be coterminous with the boundaries of one or more election units, which need not be contiguous, but which shall not be more distant from one another than twenty miles, may be created as hereafter provided in this article, and when so created shall be considered bodies politic and corporate and shall possess and may exercise the powers granted in this article. However, no municipality shall be divided in the creation of a district.