The town observed 26 seconds of silence, the New York Daily News reported. Carlee Soto, whose sister, Victoria, was a first-grade teacher and died trying to keep her students safe, called for the period of silence at 9:37 a.m., about the time Adam Lanza fired his first shots.
"Although it has been six months, we have not forgotten and we will never forget the ones that have died," she said. "The pain is excruciating and unbearable, but thanks to people like you that come out and support us, we are able to get through this."
About 200 people came together outside the town hall. Some wore green, the school color. Celia Flores, a 10-year-old from Newtown, held a sign that read "Love wins."
Organizers of the memorial also called for changes to gun laws. A screen said 6,003 people in the United States have been killed by gun violence since the Newtown shootings.
Lanza, a former Newtown student, killed his mother, Nancy Lanza, before heading to the school. He took his own life as police closed in.