(65 ILCS 5/1-1-5) (from Ch. 24, par. 1-1-5)
    Sec. 1-1-5. The corporate authorities of each municipality may exercise jointly, with one or more other municipal corporations or governmental subdivisions or districts, all of the powers set forth in this Code unless expressly provided otherwise. In this section "municipal corporations or governmental subdivisions or districts" includes, but is not limited to, municipalities, townships, counties, school districts, park districts, sanitary districts, and fire protection districts.
(Source: Laws 1965, p. 2854.)