5 listed options in Johnstown, with dates, costs, age guidance and direct organizer links. Choose a candy outing, costume event or seasonal plan that fits your group.
Coverage is curated, not exhaustive. Some listed dates may have passed; check each date before planning. Nearby towns are listed in their own city guides. Age restrictions and uncertain prices stay visible.
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Decorated trunks, candy, carnival games, hands-on activities and food at the Johnstown Y.
Location: Johnstown Community YMCA, 165 Settler Way, Johnstown, CO 80534
Cost: Free family event
Age guidance: Children and families
Organizer details for Johnstown YMCA Trunk or Treat · Tickets or registration
Downtown merchants hand out candy with children's activities, Halloween entertainment and character appearances.
Location: Downtown Johnstown, CO 80534
Cost: Free community event; business purchases separate
Age guidance: Children and families
Organizer details for Downtown Johnstown Trick-or-Treat Street
Pick pumpkins and enjoy the weekend corn maze and farm activities at Hankins Farms.
Location: 26745 Weld County Road 17, Johnstown, CO 80534
Cost: Pumpkin patch entry free; pumpkins extra. Maze/activity admission ages 3+ $16, $2 less online; discounts available.
Age guidance: Family outing; guests 13 and under need an accompanying adult in the maze
Organizer details for Hankins Farms Pumpkin Patch & Corn Maze
An afternoon of Halloween crafts, a spooky scavenger hunt and a Boo Book Walk at the Johnstown library.
Location: 400 S. Parish Avenue, Johnstown, CO 80534
Cost: Admission fee not stated in official event listing
Age guidance: All ages
Halloween-themed bingo with festive prizes and neighbors at the Johnstown Activity Center.
Location: 10 S. Parish Avenue, Johnstown, CO
Cost: Free; registration required
Age guidance: Family-friendly; numerical age limits not stated