Event · Community
Ontario Halloween Costume Contest & Trunk or Treat
- When
- Thu, Oct 29 · 3:00 PM–8:00 PM
- Where
- Ontario City Hall303 East B Street, Ontario, CA 91764Open in Google Maps ↗
- Ages
- All ages
- Cost
- Free for all participants
- Organizer
- City of Ontario Recreation & Community Services
City of Ontario Recreation special event on October 29, 2026 from 3:00 PM to 8:00 PM at Ontario City Hall, 303 East B Street. The event page lists a Halloween costume contest and a new Trunk-or-Treat experience; participants receive a trick-or-treat bag, a participation ribbon and light refreshments. Free for all participants; all ages; tagged family friendly.
Visit the official site ↗Official sources checked2026-10-13
Published details checked online. Contact responsiveness and live booking availability have not been confirmed.
What was checked & what still needs confirmation
Event page date line renders as 'Oct 293:00 PM - 8:00 PM'; the year comes from the URL and from the Special Events page, which prints 'Halloween Costume Contest & Trunk or Treat (October 29, 2026)'.