(A) It shall be unlaw­ful to sell or fur­nish alco­holic liquor at retail between the hours of twelve o’clock (12:00) A.M. Mid­night and six o’clock (6:00) A.M. on any day of the week.

(B) It shall be unlaw­ful to keep open for busi­ness, to admit the pub­lic, to per­mit the pub­lic to remain with­in, or to per­mit the con­sump­tion of alco­holic liquor by any per­son in or upon the licensed premis­es in which alco­holic liquor is sold at retail between the hours of twelve thir­ty (12:30) A.M. and six o’clock (6:00) A.M. on any day of the week; pro­vid­ed, how­ev­er, that any hold­er of a Class “B”, “C”, “D” or “F” license may remain open dur­ing between the hours of twelve thir­ty (12:30) A.M. and six o’clock (6:00) A.M. for pur­pos­es oth­er than the sale of alco­holic liquor. (Amend­ed in Ordi­nance No. 2011-11)

(See 235 ILCS 5/4–1)