There is no word on the cause of the fire that heavily damaged a building at the Pines of Perinton apartment complex off Whitney Road.
The fire was reported after 3 a.m. and went to three alarms.
Sixty-five displaced tenants are being sheltered at the Perinton Community Center.
The town is coordinating with the Fairport School District and local emergency agencies to keep the residents warm and provide food.
There are no reports of anyone missing or hurt.