Town Hall Address United States- Suffolk County Website https://www.boston.gov/neighborhood/dorchester Town Clerk 617-635-4601 https://www.boston.gov/departments/city-clerk/city-clerk-services United States Assessor 617-635-4287 https://www.boston.gov/departments/assessing Monday through Friday, 9 a.m. - 5 p.m. 1 CITY HALL SQUARE Dorchester, United States Tax Collector 617-635-4131 Monday through Friday, 9 a.m. - 5 p.m. 1 CITY HALL SQUARE Dorchester, United States Fire District 617-343-3550 United States Water 617-635-4900 United States Town Hall Hours Mon-Thurs: 10:00 to 3:00 County Suffolk