Town Hall Address 2-8 School Street Merrimac, MA 01860 United States- Essex County Website http://www.merrimac01860.info/ Town Clerk 978-346-8013 http://www.merrimac01860.info/217/Town-Clerk United States Assessor 978-346-9022 http://www.merrimac01860.info/171/Assessors Mon-Thurs: 8:00-3:00, Fri: 8:00-1:00 2-8 School Street Merrimac, United States Tax Collector 978-346-8824 Mon: 9:00-7:00, Tues-Thurs: 9:00-4:00, Fri: 9:00-1:00 2-8 School Street Merrimac, United States Fire District 978-346-8211 United States Water 978-346-8407 United States Town Hall Hours Mon: 9:00-7:00, Tues-Thurs: 9:00-4:00, Fri: 9:00-1:00 County Essex