Main Street Monster Mash

Main Street Monster Mash is Downtown Nashua’s community trick or treat event, welcoming families for an afternoon of Halloween fun right on Main Street.

After more than a decade without a Downtown Halloween celebration, the event returned in 2025 with over 500 families in attendance. Kids enjoyed trick or treating at participating businesses while a spooky soundtrack set the tone throughout Main Street. The afternoon also featured a surprise live performance from ActorSingers and the brand new Howl-O-Ween parade presented by the Humane Society for Greater Nashua with prizes for best pup costumes. The Monster Mash brings together costumes, music, pets, and community spirit, creating a festive fall tradition that we hope will continue to grow each year.