Ridgefield will host Trick or Treat from 3 to 5 p.m. Oct. 31. Families are invited to come in costume with candy buckets for trick-or-treating in historic downtown Ridgefield. Participating businesses will display a Trick or Treat sign in their windows announcing that they’re open for kids and ready to hand out candy. Learn more at facebook.com/events/1226591415330551/.