70 ILCS 3610/8.5
In addition to any other method provided for annexation under this Act, any territory, except property classified as farmland, which (1) lies within the corporate limits of a municipality as defined in this Act, (2) is contiguous to a local mass transit district organized under this Act, and (3) is not a part of another local mass transit district, may be annexed by the contiguous local mass transit district, by ordinance, after a public hearing has been held thereon by the board of trustees of the district at a location within the territory sought to be annexed, or within 1 mile of any part of the territory sought to be annexed. The annexing district shall cause to be published three times in a newspaper having general circulation within the area considered for annexation, at least 30 days prior to the public hearing thereon, a notice that the local mass transit district is considering the annexation of the territory specified. The notice shall also state the date, time and place of the public hearing. The annexing district shall cause to be delivered to each owner of a parcel of land which is 5 or more acres, which land is proposed to be annexed in whole or in part, a written notice containing the information required to be included in the published notice. The notice shall be delivered by first class mail so that said notice arrives 30 days in advance of the public hearing. The board of trustees of the district shall give due consideration to all testimony. For the purposes of this Section "property classified as farmland" shall mean property classified as farmland for assessment purposes pursuant to the Property Tax Code. This Section shall not apply to any mass transit district in the State which receives funding in whole or in part from the Regional Transportation Authority or any of its service boards.
70 ILCS 3610/8.5