65 ILCS 5/7-6-1

Any municipality, incorporated under any general or special law, may be dissolved as follows: Whenever electors in the municipality, equal to a majority of the total vote at the last preceding general municipal election, file a petition with the clerk of the municipality requesting the submission of the question whether the municipality will dissolve its incorporation, that question shall be certified by the clerk to the proper election authorities who shall submit the proposition to the electors of the municipality.