Mich. Comp. Laws § 125.11: Regional planning; definitions.

Sec. 1.

For the purpose of this act certain terms are defined as provided in this section. Wherever appropriate the singular includes the plural and the plural includes the singular. The terms "local governmental units" or "local units" shall include cities, villages, other incorporated political subdivisions, counties, school districts, special authorities, townships, or any legally constituted governing body responsible for the exercise of governmental functions within a political subdivision of the state.