The Bloomfield Chamber of Commerce will host its fifth annual Trunk or Treat event from 5:30-7:30 p.m. Friday, Oct. 31, at the Old Courthouse Square in Bloomfield. Trunk or Treat has become a staple in the Bloomfield community, drawing well more than 500 attendees each year, according to organizers. Participation is free, but those wishing to set up must reserve a spot in advance. Available spaces are filling up quickly, and only those on the official list will be allowed to participate. To reserve a spot, email bloomfieldchamberofcommerce@outlook.com.