65 ILCS 5/9-2-52
Whenever sufficient funds are on hand, the corporate authorities of the municipality issuing improvement bonds shall direct the treasurer, or such other officer as may be designated by ordinance for that purpose, to select by lot, bonds of series to be paid, or the corporate authorities shall direct the treasurer or the other officer so designated to make a pro rata payment on all unpaid bonds in the series. The treasurer or other officer so designated shall send notice by registered mail to the address of the known owner of each of the designated bonds as set out in the treasurer's records, specifying a day not less than 30 days after the date of the notice, upon which the designated bonds will be paid either in full or in part, as the case may be, at his office. He shall also supplement this notice by publishing a notice of the number of bonds to be so paid, not less than 15 days prior to the day set for payment, in one or more newspapers published in the municipality, or, if no newspaper is published therein, then in one or more newspapers with a general circulation within the municipality. In municipalities with less than 500 population in which no newspaper is published, publication may instead be made by posting a notice in 3 prominent places within the municipality, the series thereof, the assessment to which they relate and the particular bonds so selected to be paid if payment is to be made in full or in case a pro rata payment is to be made, naming the particular series upon which the partial payment is to be made, and that the same will be paid at a place to be specified.
Thereupon from the specified date of payment these bonds shall be payable on demand either in full or in part, as the case may be, at the place so appointed. No further interest shall accrue on the bonds selected to be paid in full or on that portion of the principal on bonds to be paid in part. However, in municipalities, having a population of 100,000 or more, the selection by lot and the mailing and publishing of notice may be omitted if bonds or vouchers in any series having sufficient funds on hand are presented for payment. In this latter case the bonds so presented may be paid in full, both as to principal and interest, in their order of presentation, within the limits of the funds available.
The provisions of this section shall apply to all proceedings now pending, proceedings in which judgment has been entered, and all future proceedings, except that the provisions of this section shall not apply to bonds issued under Section 9-2-127.
65 ILCS 5/9-2-52