Most McHenry County-area communities have their sanctioned trick-or-treating hours on Halloween Friday.

• Algonquin: 3 to 7 p.m.
• Barrington Hills: 3 to 7 p.m.
• Cary: 3 to 7 p.m.
• Carpentersville: 3 to 7 p.m.
• Crystal Lake: 3 to 7 p.m.; downtown Halloween Handout 3 to 5 p.m.
• East Dundee: 3 to 7 p.m.
• Fox Lake: 4 to 7 p.m.
• Fox River Grove: 3:30-7:30 p.m.
• Hampshire: 4 to 7 p.m.
• Harvard: 4 to 8 p.m.
• Hebron: 4 to 8 p.m.
• Holiday Hills: 4 to 8 p.m.
• Huntley: 4 to 8 p.m., Trick-or-Treat Around the Square 10 a.m. to 2 p.m.
• Island Lake: 4 to 8 p.m.
• Johnsburg: 3 to 7 p.m.
• Lake in the Hills: 2 to 8 p.m.
• Lakemoor: 3 to 7 p.m.
• Lakewood: 4 to 7 p.m.
• Marengo: 3 to 8 p.m.
• McCullom Lake: 4 to 8 p.m.
• McHenry: 4 to 8 p.m.
• Oakwood Hills: 3 to 7 p.m.
• Prairie Grove: 4 to 7 p.m.
• Richmond: 4 to 7 p.m.
• Spring Grove: 4 to 7 p.m.
• Union: 3 to 5:45 p.m.
• Wonder Lake: 3 to 8 p.m.
• Woodstock: 4 to 7 p.m.; Halloween on the Square with trick-or-treating from 4-5 p.m., costume contest at the bandstand at 4:45 p.m.