"Sorry guys, you're nearly two hours past the end of trick-or-treating, you've got no costumes, and you're way too old for this. But were they legally too old to be trick-or-treating in Illinois? In Roanoke, kids over the age of 12 who go trick-or-treating are technically guilty of a misdemeanor, which is punishable by up to six months in jail. Austin Berg of Illinois Policy did some researching, and here are a couple of things that he found about maximum trick or treating age limits and other Illinois Halloween rules:Belleville appears to be home to the strictest such laws in the state . Getty Images Getty Images loading...Forsyth, outside Decatur, has one of the most unique and harsh restrictions in the state.