Town Hall Address 3 South Main Street Petersham, MA 01366 United States- Worcester County Website http://www.townofpetersham.org/ Town Clerk 978-724-6649 http://www.townofpetersham.org United States Assessor 978-724-6658 https://townofpetersham.weebly.com/board-of-assessors.html Monday thru Wednesday 7:00am-12:00pm and 12:30pm-3:30pm 3 South Main Street Petersham, United States Tax Collector 978-724-6620 Monday 1:00 PM – 5:00 PM 3 South Main Street Petersham, United States Fire District 978-7246658 United States Town Hall Hours Monday through Thursday 8am – 5pm County Worcester