Last year's downtown trick-or-treat was on Saturday, October 25, 2025, 2–4 p.m.. It was an organized event, not town-wide hours.
Source: Times-Standard, Oct. 23, 2025 · checked Sept. 25, 2026
Last year: Trick-or-treat in downtown and Old Town Eureka; posters in participating business windows.
| Town | County | 2026 | Last year (2025) |
|---|---|---|---|
| Alameda | Alameda County | Not posted yet | Fri, Oct. 31, 1–5 p.m. (event) |
| Antioch | Contra Costa County | Not posted yet | Sat, Oct. 25, 10 a.m.–2 p.m. (event) |
| Aptos | Santa Cruz County | Not posted yet | Fri, Oct. 31, 3–4:30 p.m. (event) |
| Arcadia | Los Angeles County | Not posted yet | Fri, Oct. 24, 4–6:30 p.m. (event) |
| Brea | Orange County | Not posted yet | Fri, Oct. 31, 5–7 p.m. (event) |
| Brentwood | Contra Costa County | Not posted yet | Sat, Oct. 25, 4–8 p.m. (event) |
| Fairfield | Solano County | Not posted yet | Fri, Oct. 31, 3–6 p.m. (event) |
| Folsom | Sacramento County | Not posted yet | Sat, Oct. 25, 2–5 p.m. (event) |
| Goleta | Santa Barbara County | Not posted yet | Fri, Oct. 31, 3–6:30 p.m. (event) |
| Huntington Beach | Orange County | Sat, Oct. 31, 4–7 p.m. (event) | Fri, Oct. 31, 4–7 p.m. (event) |
| Little Italy | San Diego County | Sun, Oct. 25, 3:30–7:30 p.m. (event) | Sun, Oct. 26, 3:30–7:30 p.m. (event) |
| Lompoc | Santa Barbara County | Not posted yet | Sat, Oct. 25, 1–3 p.m. (event) |
| Martinez | Contra Costa County | Sat, Oct. 24, 11 a.m.–2 p.m. (event) | — |
| Menlo Park | San Mateo County | Not posted yet | Sat, Oct. 25, 11 a.m.–2 p.m. (event) |
| Monrovia | Los Angeles County | Not posted yet | Fri, Oct. 31, 3–6 p.m. (event) |
| Montrose | Los Angeles County | Sat, Oct. 31, 5–7 p.m. (event) | — |
| Normal Heights | San Diego County | Not posted yet | Sun, Oct. 26, noon–5 p.m. (event) |
| Orange | Orange County | Not posted yet | Thu, Oct. 30, 4–7 p.m. (event) |
| Petaluma | Sonoma County | Sat, Oct. 31, 3–5:30 p.m. (event) | Fri, Oct. 31, 3–5:30 p.m. (event) |
| Piedmont Avenue | Alameda County | Not posted yet | Sat, Oct. 25, 11 a.m.–1 p.m. (event) |
| Riviera Village | Los Angeles County | Not posted yet | Fri, Oct. 31, 3–8 p.m. (event) |
| Rockridge | Alameda County | Not posted yet | Sun, Oct. 26, 11 a.m.–2 p.m. (event) |
| San Carlos | San Mateo County | Fri, Oct. 30, 4–5:30 p.m. (event) | Fri, Oct. 24, 4–5:30 p.m. (event) |
| San Mateo | San Mateo County | Sat, Oct. 24, 3–5 p.m. (event) | Sat, Oct. 25, 3–5 p.m. (event) |
| San Rafael | Marin County | Sat, Oct. 24, 1–3 p.m. (event) | — |
| Santa Cruz | Santa Cruz County | Not posted yet | Fri, Oct. 31, 2–5 p.m. (event) |
| Sausalito | Marin County | Sat, Oct. 31, 6–8 p.m. (event) | Fri, Oct. 31, 6–8 p.m. (event) |
| Sierra Madre | Los Angeles County | Not posted yet | Fri, Oct. 31, 3–5 p.m. (event) |
| Stockton | San Joaquin County | Fri, Oct. 30, 4–7 p.m. (event) | — |
| Truckee | Nevada County | Not posted yet | Fri, Oct. 24, 4–6:30 p.m. (event) |
| Ukiah | Mendocino County | Not posted yet | Fri, Oct. 31, 3:30–5:30 p.m. (event) |
| Visalia | Tulare County | Not posted yet | Fri, Oct. 24, 3–6 p.m. (event) |
| Vista | San Diego County | Not posted yet | Fri, Oct. 24, 5–9 p.m. (event) |
| Watsonville | Santa Cruz County | Not posted yet | Sun, Oct. 26, 2–6 p.m. (event) |
| Willits | Mendocino County | Not posted yet | Fri, Oct. 31, 4–6 p.m. (event) |
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Updated
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