Town Hall Address 730 Massachusetts Avenue Arlington, MA 02476 United States- Middlesex County Website https://www.arlingtonma.gov/ Town Clerk 781-316-3071 https://www.arlingtonma.gov/departments/clerk-s-office United States Assessor 781-316-3050 https://www.arlingtonma.gov/departments/assessor Mon-Wed: 8:00 to 4:00. Thurs: 8:00 to 7:00. Fri: 8:00 to 12:00 730 Mass Avenue Arlington, United States Tax Collector 781-316-3030 Mon-Wed: 8:00 to 4:00. Thurs: 8:00 to 7:00. Fri: 8:00 to 12:00 730 Mass Avenue Arlington, United States Fire District 508-316-3800 United States Water 508-316-3301 United States Town Hall Hours Mon-Wed: 8:00 to 4:00. Thurs: 8:00 to 7:00. Fri: 8:00 to 12:00 County Middlesex