70 ILCS 705/14.04
Notice of the hearing on the petition shall be given by publishing the notice in a newspaper of general circulation published in the county in which the districts are situated. The notice shall be published once each week for two successive weeks. The first publication of the notice shall be at least three weeks prior to the date fixed for hearing. When the districts are situated in two or more counties, then such notice shall be given as aforesaid by publishing the same in a newspaper of general circulation published in each of said counties. If no newspaper of general circulation is published in any such county, then publication of the notice shall be in a newspaper having general circulation in that county.
The certificate of the clerk of the court affixed to a copy of the notice shall be sufficient evidence of the mailing of the notices to the said trustees.
70 ILCS 705/14.04