City of Cambridge Halloween Events and Important Safety Tips

The Halloween season will once again offer a variety of fun events for children, youth, and families across the City of Cambridge.

Various City departments will be hosting or sponsoring a series of Halloween events in Cambridge between October 29 -31, 2025.

Please see a listing of some of the events below.

Vampire Orienteering 
Danehy Park, 166 New Street, Cambridge
Wednesday, October 29, 6-8 p.m.

Join a night of free and festive fun! Test out your orienteering skills by forming teams of 2–4 people. Teams will travel through the park and use a special map to look for checkpoints — but watch out for vampires! Bring a flashlight, wear a costume if you want, and enjoy Halloween candy! Open to all ages and experience levels. Registration is required by Tuesday, October 28. This event is offered by Navigation Games and sponsored by the Department of Human Service Programs. Learn more. 

Trick of Treat on City Hall Lawn
Cambridge City Hall, 795 Massachusetts Avenue
Thursday, October 30, 3-5 p.m.

Put on your best costume and join the Mayor’s Office, the City Manager’s Office, Cambridge Police, Cambridge Fire, and other City Departments for treats and Halloween Fun.

Halloween Movie
Central Square Branch Library, 45 Pearl Street
Friday, October 31, 3-5 p.m.

Join us for a special Halloween screening of Hocus Pocus (rated PG) on Central Square Library’s big screen and eat free popcorn! No registration is required.

Halloween Parties!
O’Connell Branch Library, 48 Sixth Street, 3-5 p.m. 
Central Square Branch Library, 45 Pearl Street, 3:30-5:30 p.m.
Friday, October 31 

Join us for a drop-in Halloween celebration with stories, music, coloring/activity sheets, and treats. Costumes are encouraged! This program is for children and their caregivers.

Cambridge Police Department Halloween Open House 
Community Room,125 Sixth Street, Cambridge 
Friday, October 31, 4-6:30 p.m. 

Stop by the Cambridge Police Department Community Room for treats on Halloween from 4 p.m. – 6:30 p.m.

Additionally, on Halloween night, Cambridge Police Officers will be out in various areas of the City engaging with people in the community who are out trick or treating.

Halloween Open Houses at Most Cambridge Fire Houses
(except Headquarters, 491 Broadway, which is closed for reconstruction) 
Friday, October 31, 4-6 p.m.

All are welcome to drop in and visit with the firefighters and check out the apparatus, tools, and equipment. Children are invited to wear their costumes. Candy donated by Cambridge Brands will be distributed to visitors. Glow sticks will also be distributed and vouchers for one scoop of ice cream from JP Licks will be given out as long as supplies last. Please keep in mind that fire companies are in service during the Open House and may have to respond to emergency calls. 

Halloween Safety Tips
For general Halloween safety, all children are reminded to wear reflective colors, carry a flashlight when it gets dark, and use extra caution crossing streets. Young children should be accompanied by an adult or a responsible older child. When wearing a costume, watch for trip hazards, especially on stairs. Allow plenty of clearance if passing a heat source or open flame when in costume. Open flames should never be used as Halloween decorations or costumes. Any treats given to kids should be checked out by an adult for safety purposes. In case there is a need to call for help, carry a cell phone and, as always, call 911 right away or pull the nearest City fire alarm box.