Trick-or-treat in Mason runs 6 to 8 p.m. on Saturday, Oct. 31.
The city's community calendar lists the two-hour window, consistent with Mason's established Halloween schedule. Deerfield Township traditionally follows the same 6 to 8 p.m. hours on Oct. 31, according to the Warren County Post's 2026 Halloween guide, though the township had not issued a formal 2026 announcement as of Sept. 30. Residents can check choosedeerfield.com for an official update.
Before neighborhood trick-or-treating begins, Deerfield Township hosts its Car Show & Trunk or Treat at Cottell Park, 4900 Parkway Drive, on Saturday, Oct. 10. The free event runs 1 to 5 p.m. rain or shine.
Cottell Park trunk-or-treat details
Trunk-or-treating runs 2 to 3 p.m. Children's costume contest winners will be announced at 3 p.m., with car awards and an adult costume contest starting at 4:15 p.m.
Admission is free.
The event is a partnership between Deerfield Township and Cincy Street Rods, now in its 36th year as the annual Halloween Cruise-In. Cars participating in the Cruise In pay a minimum $5 cash donation, with proceeds going to the Joe Nuxhall Miracle League. Doors open at 11 a.m. for car participants, according to a Cincy Street Rods Facebook post, while the public event window begins at 1 p.m.
Food trucks We Do BBQ and Dreamy's Ice Cream will be on site. Door prizes and a split-the-pot drawing round out the afternoon. For Cruise In details, residents can contact Kevin at 513-594-1452 or visit cincystreetrods.com.
The Warren County Post guide also lists trick-or-treat hours for other Warren County communities and will be updated as municipalities issue additional Halloween notices.
What to know
- Mason trick-or-treat: Saturday, Oct. 31, 6 to 8 p.m.
- Deerfield Township trick-or-treat: Saturday, Oct. 31, 6 to 8 p.m. (traditional hours; check choosedeerfield.com for official confirmation)
- Deerfield Township Car Show & Trunk or Treat: Saturday, Oct. 10, 1 to 5 p.m., Cottell Park, 4900 Parkway Drive. Trunk-or-treat 2 to 3 p.m. Free. Rain or shine.
