Trunk-or-Treats · Ontario
Halloween Costume Contest & Trunk or Treat — City of Ontario
At a glance
- Dates
- Thu. Oct. 29, 2026 · 3–8pm
- Admission
- Free
- Good for
- All Ages
- Where
- Ontario City Hall, 303 E B St, Ontario, CA 91764
Get directions ↗ - Area
- Ontario, Inland Empire
- Official site
- Official site ↗
Weather permitting: outdoor events in SoCal can close for rain or wind on short notice, so check the host’s page the day you go.
Dates, times and tickets can change. Check the official site before you go.
What to expect
Ontario’s free Halloween costume contest at City Hall, with a new trunk-or-treat this year. Participants get a trick-or-treat bag, a participation ribbon and light refreshments.
More in the Inland Empire
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- Spooktacular — City of Rancho Cucamonga · Sat. Oct. 24, 2026 · 5–8pm
- Trunk or Treat — Corona Friends Church · Sat. Oct. 24, 2026 · 3–5pm
- UCR R'Garden Fall Festival — Trunk or Treat · Sat. Oct. 24, 2026 · Trunk or Treat 3–4pm
- Olive Branch Church & School Fall Festival & Trunk or Treat · Sun. Oct. 25, 2026 · 5–8pm
All Trunk-or-Treats → All of the Inland Empire → The SoCal Spooky finder →