60 ILCS 1/90-5: Township wholly within city.

In every township lying wholly within any city of more than 50,000 population, all the powers vested in the township shall be exercised by the county board of the county in which the township is located, including all the powers vested in the electors at township meetings and the township board. Where there is only one township lying wholly within the city, however, the powers of the township board of that township shall be retained by that township board.