Trick and Trunk or Treat in Downtown Coos Bay! The Coos Bay Downtown Association and our local businesses will celebrate Halloween this Friday October 30th from 3:00 PM to 5:00 PM! Just look for the Pumpkin Poster at participating businesses for a treat! And come to the parking lot at 4th and Bennett across from Outdoor In for TRUNK-OR-TREAT! Download a list of participating businesses!