Town Hall Address 365 Boston Road Billerica, MA 01821 United States- Middlesex County Website http://www.town.billerica.ma.us/ Town Clerk 978-671-0924 http://www.town.billerica.ma.us/159/Town-Clerk United States Assessor 978-671-0971 http://www.town.billerica.ma.us/131/Assessors-Office Mon-Fri: 8:30 to 4:00 365 Boston Road Billerica, United States Tax Collector 978-671-0920 Mon-Fri: 8:30 to 4:00 365 Boston Road Billerica, United States Fire District 978-671-0940 United States Water 978-671-1313 United States Town Hall Hours Mon-Fri: 8:30 to 4:00 County Middlesex