California Halloween Events

Ontario Halloween Costume Parade and Contest

October 31, 2023, 2:30-4:30 p.m.

Ontario Senior Center
225 East B St.
Ontario, CA
Free, for ages 0-8 years

  • Get ready for a ghostly good time
  • Special Entertainment
  • Check-in at 3 p.m.; Parade Begins: 3:45 p.m.

Family Costume Categories: Creepiest: Creepy Costumes Most Unique: Out of the ordinary costumes Cute & Colorful: Brightly colored costumes Best Look-Alike: Best portrayals of a celebrity or fictional character. For: Children age 8 years and younger Age Divisions: 0-2 years 3-4 years 5-6 years 7-8 years and Family. Ontario Recreation and Community Services sponsors this outstanding event.

Ontario Trunk or Treat

October 27, 2023, 4:30-8 p.m.

Westwind Park - 2023 location to be determined
2455 E. Riverside Drive
Ontario, CA

The City of Ontario invites ages 18 & older to enter the car trunk decorating contest. A registration fee helps defer costs and you're provided the candy to distribute to kids who go car to car trunk or treating. The event is incredibly fun for all ages.  There's 1st, 2nd & 3rd place awards for trunk decorating!

  • Games
  • Treats
  • Food Vendors
  • Drone Show
  • Spooky Concert

Kids can participate free and can come in costume to go trick or treating at car trunks. These are not just any car trunks. They are decorated in themes and designs for Halloween.

Historic Cemetery Tour

October 14, 2023, 10 a.m.

Ontario Heritage & Bellevue Memorial Present the 13th Annual Richard D. Delman Historic Cemetery Tour

Bellevue Memorial Park
1240 W. G Street
Ontario, CA

Visit with some of Ontario's early citizens as local costumed actors bring characters to life. Ticket sales begin at 9:30 a.m. and tour starts at 10:15 a.m.

Other fun events in Ontario include the free summer concerts and Easter Egg Hunts.

Events are not guaranteed. It is your responsibility to confirm before going.

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