All cities and villages with less than 500,000 inhabitants, which are treated as properly incorporated, or which hereafter are incorporated under this Code, in addition to all the rights, powers, and authority conferred upon them elsewhere in this Code, shall have the rights, powers and authority conferred in this Article 5, by proceeding as provided in Section 5-1-4. For convenience this Article 5 is designated "The Managerial Form of Municipal Government".
65 ILCS 5/5-1-1