65 ILCS 5/7-1-5
After the clerk receives the certified copy of the order of the court, the corporate authorities of the annexing municipality shall proceed to consider the question of the annexation of the described territory. A majority vote of the corporate authorities then holding office is required to annex. The vote shall be by "ayes" and "noes" entered on the legislative records. Except as is otherwise provided in Section 7-1-1, this decision shall be effective after the expiration of 30 days unless a referendum on the question is ordered by the corporate authorities or unless a petition for a referendum is filed. If no referendum is ordered by the corporate authorities and no petition for a referendum is filed, the municipal clerk shall, promptly after the expiration of the 30 days, send written notice of the annexation by registered mail to the highway commissioner of each road district within which the annexed territory is described. If a municipal clerk fails to send any notice to a highway commissioner as required by this Section, the municipality shall reimburse the road district served by that highway commissioner for any loss or liability caused by that failure.
65 ILCS 5/7-1-5