2026 Trick or Treat Halloween Bash -Saturday, October 31, 2026

The City of Monrovia's Trick - or - Treat and Halloween Bash will be held this year on Saturday, October 31, from 3:00 p.m. - 6:00 p.m. in Library Park, located at 321 S. Myrtle Avenue. Dress to impress in your best costume to participate in our costume contest. Registration for the costume contest is onsite on Saturday, October 31, and begins at 3:00 p.m. While you wait to show off your costume, take a spooky stroll around Old Town Monrovia for some Trick - or - Treating with our Old Town Merchants or enjoy the activities offered int he park. Come out and join us for a spook-tac-ular time!

For more information please contact the Community Center at (626) 256-8246. 

2025 Halloween Costume Contest Video Flashback

Subscribe to the City of Monrovia YouTube Channel and take a trip back to 2025 and see all the terrific costumes on display! So many to see, and so many categories to enjoy! Who are your favorite?