Mich. Comp. Laws § 81.16
Judicial notice shall be taken in all courts and proceedings in this state of the existence of all cities incorporated or made subject to the provisions of this act, and of the change of organization of any city or village from its former organization to its incorporation under or subject to the provisions of this act, and of all changes at any time made in the corporate limits of any city, by the annexation of territory thereto or otherwise, and of the boundaries of all wards, and of all changes made at any time in the boundaries of any ward in any such city; and from the time of such incorporation or change of organization the provisions of this act shall be applicable to such cities, and all laws in conflict therewith shall no longer be applicable.
MCL 81.16