Top 6 Contra Costa County Halloween 2026 Family Events: Concord and Walnut Creek. Halloween across Contra Costa County does not have to mean big crowds and high prices. Concord’s park and police department offer structured, free candy events, while Walnut Creek combines a low-sensory celebration with hands-on wildlife programs. Older children may prefer a controlled haunted-house experience. Our selection stays close to verified 2026 event announcements instead of extending the ranking with unconfirmed neighborhood traditions.

Checked October 10, 2026: Organizer schedules, admission, age limits and weather policies may change. This is an editorial selection of 6 locations and events, not a popularity ranking. Verify your chosen date directly before driving.

2026 Contra Costa County Halloween family calendar

Place or event Where When
Walnut Creek Trunk or Treat at Civic Park Walnut Creek — Civic Park Friday, October 23, 2026, 3–6 p.m.
Concord Preschool Trick or Treat Trail Concord — Baldwin Park, 2790A Parkside Circle Friday, October 16, 2026, 4:30–6:30 p.m.
Concord Police Department Trunk or Treat Concord — 1350 Galindo Street Saturday, October 24, 2026, 3–6 p.m.
Howl-ooo-ween at Lindsay Wildlife Experience Walnut Creek — 1931 First Avenue Tuesday, October 27, 2026, 3–8 p.m.
Halloween Costume Boo-tique at Concord Library Concord Library Tuesday, October 20, 2026, 4–7 p.m.
Walnut Creek Elks Spooktacular Haunted House — Older Kids Walnut Creek — Elks Lodge, 1475 Creekside Drive October 23–24, 2026, approximately 7:30–10 p.m.

Our 6 top family Halloween and harvest experiences

1. Walnut Creek Trunk or Treat at Civic Park

Where: Walnut Creek — Civic Park. When: Friday, October 23, 2026, 3–6 p.m..

One of the most thoughtfully structured choices for diverse family needs. Walnut Creek Arts + Rec sets aside 3–4 p.m. as a low-sensory hour with reduced noise and allergy-friendly alternatives, then opens its main trick-or-treat program from 4–6 p.m. Expect candy, games, activities and a scavenger hunt; the organizer’s page details accommodations.

Check 2026 organizer information →

2. Concord Preschool Trick or Treat Trail

Where: Concord — Baldwin Park, 2790A Parkside Circle. When: Friday, October 16, 2026, 4:30–6:30 p.m..

The City of Concord offers a free costume-friendly path through candy stations, crafts and a Halloween scavenger hunt. It is designed with young children in mind, and the preschool site also holds an open house. Free pre-registration is required for event activities and treat bags, so secure a slot rather than arriving unannounced.

Check 2026 organizer information →

3. Concord Police Department Trunk or Treat

Where: Concord — 1350 Galindo Street. When: Saturday, October 24, 2026, 3–6 p.m..

Concord’s police department confirms its fifth annual neighborhood-style Halloween party in the front parking lot, with costumes, treats, games, prizes and free overflow parking. This is a practical family outing for residents who don’t want to buy a theme-park ticket or travel far across the Bay Area.

Check 2026 organizer information →

4. Howl-ooo-ween at Lindsay Wildlife Experience

Where: Walnut Creek — 1931 First Avenue. When: Tuesday, October 27, 2026, 3–8 p.m..

A seasonal wildlife center celebration includes animal encounters, gentle crafts, face painting and playful science. Organizers list special tickets (around $20 for nonmembers and discounted family options) and ask families to avoid large masks or inflatable costumes for the animals’ comfort. Ideal for school-age naturalists.

Check 2026 organizer information →

5. Halloween Costume Boo-tique at Concord Library

Where: Concord Library. When: Tuesday, October 20, 2026, 4–7 p.m..

Budget-conscious families can choose from donated gently used or new costumes at this free public-library program. The county library’s 2026 calendar specifies one costume per person and no appointment requirement. It’s a useful preparation activity that also helps families reuse clothing rather than purchasing a new costume every year.

Check 2026 organizer information →

6. Walnut Creek Elks Spooktacular Haunted House — Older Kids

Where: Walnut Creek — Elks Lodge, 1475 Creekside Drive. When: October 23–24, 2026, approximately 7:30–10 p.m..

For families with older children who enjoy a real theatrical fright, this community haunted house uses costumed actors and dark rooms. Local event listings give separate adult and child ticket prices and advise against attendance by children younger than seven. Skip it if a child is sensitive to jump scares.

Check 2026 organizer information →

Before you go

The Concord preschool Trick-or-Treat Trail requires pre-registration even though admission is free; unregistered arrival may not give access to treat activities. Walnut Creek’s low-sensory hour is separate from the louder general event. The Elks haunted house is recommended for older children only, not those below age seven.

Children should be accompanied by adults, and families should check event-specific accessibility, costume guidelines, pet policies and refund rules. Free admission does not always include rides, candy or parking.

Explore the rest of California’s Halloween 2026 guides

Find our California Halloween 2026 statewide county directory, discover the Contra Costa County travel guide, and explore more regional ideas:

Planning a trip? Visit OptionTrip.com.

Official and local sources

California58 Editorial Desk. Cover photo Jonny Gios / Unsplash: illustrative seasonal imagery, not a photo of this year’s event. OptionTrip promotional content is separated from editorial recommendations.

Explore Contra Costa County beyond Halloween

For county-specific communities, public services and local knowledge, visit the Contra Costa County reference profile. You can also browse all California58 travel guides. Halloween 2026 events are seasonal and may change; check each organizer’s current calendar before traveling.

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