Michigan Compiled Laws, Chapter 46. County Boards of Commissioners § 46.401

Sec. 1.(1) Within 60 days after the publication of the latest United States official decennial census figures, the county apportionment commission in each county of this state shall apportion the county into not less than 5 nor more than 21 county commissioner districts as nearly of equal population as is practicable and within the limitations of section 2.  1

(2) If a county is not in compliance with section 2 on the effective date of the amendatory act that added this subsection,  2 the county apportionment commission of that county shall, within 30 days of the effective date of the amendatory act that added this subsection, apportion the county in compliance with section 2. For subsequent apportionments in a county that is apportioned under this subsection, the county apportionment commission of that county shall comply with the provisions of subsection (1).