Boulder County, Colo. - The Boulder County Sheriff’s Office, Boulder County Coroner’s Office, and Boulder County Public Health invite the community to the third annual Trunk or Treat event, scheduled for Tuesday, Oct. 20, 2026, from 4 to 7 p.m. Registration is free, but tickets are expected to sell out.

Families are encouraged to visit the Boulder County Sheriff’s Office headquarters at 5600 Flatiron Parkway for an evening of candy, costumes, and community. Children 12 and under can walk through the Sheriff’s Office haunted hallway, collect treats from costumed staff and explore emergency vehicles from multiple first responder agencies during the Trunk or Treat in the parking lot. The fun continues in the Coroner’s Office haunted hallway and at Engine Alley, where additional treats and surprises will be available. Be sure to stop by the inflatable obstacle course courtesy of the Colorado National Guard.

The event offers families a chance to celebrate Halloween while meeting first responders, public safety staff, and community partners from across Boulder County.

Costumes are encouraged, and strollers and wagons are welcome. Sensory bags will be provided courtesy of the Autism Society of Boulder County to support an enjoyable experience for attendees with sensory needs.

Date: Tuesday, Oct. 20, 2026

Time: 4–7 p.m.

Location: Boulder County Sheriff’s Office, 5600 Flatiron Parkway, Boulder

Registration: Please register for a time slot for this free event, as capacity is limited.

We appreciate the generous support of our sponsors and partners, whose involvement helps create a safe and fun experience for families.

Sponsors

Pumpkin Patch Level – Elevations Credit Union • Boulder Oral Surgery and Dental Implants and Dental Implants and Oral Surgery of Longmont — Terry Nedbalski, DDS, and J. Brandon Luter, DDS

Mummy Magic Level – Wing Shack • Watchmaker Genomics

Tombstone Trickster Level – Blackjack Pizza & Salads in Boulder

In-kind support – FedEx Office Pearl Street • Target • Chick-Fil-A

Participating Organizations

Public safety and first responder agencies

• American Medical Response of Boulder
• Boulder County Co-Responders
• Boulder County Coroner’s Office
• Boulder County District Attorney’s Office
• Boulder County Sheriff’s Office
• Boulder Emergency Squad
• Boulder Fire Rescue
• Boulder Police Department
• Boulder Rural Fire Rescue
• Colorado Department of Corrections
• Colorado National Guard Counterdrug Drug Demand Reduction Outreach
• Colorado State Patrol
• Falck Ambulance
• Front Range Rescue Dogs
• Lafayette Police Department
• Longmont Public Safety
• Louisville Police Department
• Mountain View Fire Rescue
• Rocky Mountain Rescue Group
• University of Colorado Police Department

Government partners

• Boulder County Parks and Open Space
• Boulder County Public Health
• Boulder County Resource Conservation Division
• City of Boulder Open Space and Mountain Parks

Community organizations

• Autism Society of Boulder County
• Boulder Country Day School
• Friends of the Boulder County Sheriff K9 Association
• Humane Society of Boulder Valley
• Lutheran Church Charities K-9 Comfort Dog Ministry

For registration questions, contact the Coroner’s Office at coronerevent@bouldercounty.gov. For general questions, contact Sheriff’s Office PIO Vinnie Montez at vmontez@bouldercounty.gov or 303-550-3837.

Trunk or Treat flyer