Halloween · Denver Metro
Boo at the Zoo
Oct 23–31, 2026 · 4:30–9 PM
Denver Zoo, 2300 Steele St. · Denver
For Oct 23–25 and Oct 30, adults and seniors are $27.95 and youth are $20.95. Ages 2 and under are free. A Lil' Boo Bag for ages 2 and under is $5.
Remaining 2026 nights are Oct 23–25 and Oct 30, plus a sensory-friendly night on Oct 31, all 4:30–9 PM. The zoo says popular times sell out.
Boo at the Zoo is a timed, ticketed trick-or-treat night at the Denver Zoo, 2300 Steele St. The zoo's event page lists October 2–3, 9–11, 16–18, 23–25, and 30, from 4:30 to 9 PM, plus a sensory-friendly night on October 31 at the same hours. Nights before Oct 23 are already past. The dates still ahead are Oct 23, 24, 25, and 30, and the sensory night on Oct 31. It does not run every night in between.
The listing describes nine candy stations, cryptid creatures and costumed characters, animal ambassadors, a Wild Fall Market, and photo ops. A ticket includes one reusable trick-or-treat bag. For Oct 16–18, 23–25, and 30, the page lists adults and seniors at $27.95 and youth at $20.95, with ages 2 and under free. Members are listed at $25.15 and $18.85. An optional Lil' Boo Bag for kids 2 and under is $5. The page does not publish a separate price for the Oct 31 sensory night. It says the most popular dates and times sell out.