Oct17Sat
Fall Harvest
A costume parade, community booths and fall activities for all ages.
On set dates
209 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.
Oct16Fri
Fall-O-Ween at Heritage Hill
A free OC Parks evening with decorated historic grounds, a scavenger hunt and photo spots.
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.
Oct15Thu
The Pumpkin Patch (Placentia)
A longtime pumpkin patch with inflatables, a petting zoo, baby chicks, gold panning, tractor and carnival rides and photo spots. Free admission.
Oct24Sat
Fall Fest at Placentia Presbyterian Church
A free community fall party with games, crafts, live music, food and candy.
Oct24Sat
Trunk or Treat at Three Sixteen Church
A free church trunk-or-treat with raffles, games and contests.
Oct16Fri
Silverado Days
An 89th-year community fair with carnival rides, food, live entertainment and the pie-eating contest.
Oct28Wed
Cops N' Goblins
Activities, costume contests, games and trunk-or-treating, co-hosted with the Buena Park Police Department.
Oct25Sun
Tales, Tails, & Treats
A themed storytime with crafts, plus a chance to meet adoptable kittens. No registration needed.
Oct26Mon
Make Your Own Trick-or-Treat Bag
Decorate your own trick-or-treat bag in the library's story room.
Oct17Sat
Halloween Pumpkin Rescue
Swim in a pool filled with floating pumpkins, pick one, decorate it and enjoy music. Advance registration required; $10-$15.
Oct22Thu
Haunted Trails
Four nights of a scary walk-through trail themed around abandoned hospitals and failed experiments. Not recommended for kids under 10; tickets required.
Oct23Fri
Trunk or Treat at Messiah Lutheran Church
A free family evening that ends with trunk-or-treat; decorate your car and hand out candy.
Oct24Sat
Trails & Treats Halloween Hike
A gentle, not-scary Halloween hike with treats and photo spots along the trail. Pre-registration required.
Oct15Thu
Mr. Jack-o-lantern's Pumpkin Patch
A family pumpkin patch with games and activities, birthday and field-trip bookings, and pumpkins, gourds, squash, corn stalks and hay for sale.
Oct15Thu
Taylor Tomlinson: Tries Out New Ideas
A Comedy arts and theatre event at Brea Improv. Tickets and details through Ticketmaster.
Oct16Fri
Taylor Tomlinson: Tries Out New Ideas
A Comedy arts and theatre event at Brea Improv. Tickets and details through Ticketmaster.
Oct17Sat
Jack Whitehall
A Comedy arts and theatre event at Brea Improv. Tickets and details through Ticketmaster.
Oct18Sun
Jack Whitehall
A Comedy arts and theatre event at Brea Improv. Tickets and details through Ticketmaster.
Oct21Wed
Joe Fenti
A live event at Brea Improv. Tickets and details through Ticketmaster.
Oct22Thu
Ben Bankas
A live event at Brea Improv. Tickets and details through Ticketmaster.
Oct23Fri
Aida Rodriguez
A Comedy arts and theatre event at Brea Improv. Tickets and details through Ticketmaster.
Running all season
29 listingsSeasonMulti-week
Discovery Day at the Farm
A recurring Discovery Day program at Centennial Farm. See the OC Fair calendar for details and registration.
SeasonMulti-week
Courageous Companions: Animals in American Wars
A Heroes Hall exhibition about animals who served in American wars. (End date assumed to be Sept 1, 2027; confirm on the OC Fair site.)
SeasonMulti-week
Roger's Gardens Halloween Boutique
A themed, museum-style Halloween shop with collectibles, artisan decor and haunted vignettes.
SeasonMulti-week
Roger's Gardens Halloween Boutique: Moonlight Masquerade
A Venice-themed Halloween shop with masks, original designs and seasonal collections.
SeasonMulti-week
Newport Beach Holiday Lights Cruises
A 75-minute evening harbor cruise past decorated waterfront homes and boats, with departures at 5:30, 7:00 and 8:30 PM. Reservations are required.
SeasonMulti-week
Oktoberfest at Old World Village
German food and beer, oom-pah bands and dancing. Family-friendly by day, 21+ on weekend nights.