By Brian R. Brown Guides Trick-or-Treating Hours & Trick-or-Treat Tips 2023 Grab your costume and your treat bag! Before you head out though, be sure to check our annual McHenry County Trick-or-Treating hours list for your local treating times and events. tips, Marengo, trick-or-treat, McCullom Lake, Spring Grove, Oakwood Hills, Algonquin, Port Barrington, Barrington Hills, Prairie Grove, Bull Valley, Richmond October 12, 2023