Oct31Sat
Trick or Treat on Main Street
Trick-or-treating at participating shops along Main Street.
On set dates
9 events
Oct24Sat
Boo Bash 2026
A Halloween party for all ages: trunk-or-treat, pumpkin decorating, costumes, dancing and prizes.
Oct24Sat
Halloween Carnival at Los Alamitos Race Course
Carnival games, a costume contest and live horse racing. Adults $3; kids under 18 free.
Oct14Wed
The Pumpkin Factory at Westminster Mall
A mall-lot pumpkin patch pop-up with rides, games and a petting zoo.
Oct23Fri
Halloween Spooktacular (Westminster)
Candy-filled trunks, seasonal activities and an open-air movie at the Civic Center.
Oct24Sat
Halloween Festival (Stanton)
Games, entertainment, costume contests and food trucks for all ages; no pre-registration.
Oct24Sat
La Palma Halloween Carnival 2026
A safe, family-oriented alternative to trick-or-treating with carnival games, costume contests, treats and giveaways. No cost to attend.
Oct31Sat
HB Downtown Surf City Spooktacular
Main Street turns into a trick-or-treat route with a monster march, costume contest, character appearances and the Boo Wave, supporting Waymakers.
Oct24Sat
Jack-o-Lantern Jamboree
A family Halloween party with an inflatable slide, a reptile booth, carnival games, face painting and glitter tattoos, a pumpkin patch and crafts. Registration is requ...
Running all season
1 listingSeasonMulti-week
Howl-O-Ween at Great Wolf Lodge
Halloween programming at the resort, including a trick-or-treat trail, yoga, a dance party and an art class.