Town Hall Address 1 Metcalf Square Winthrop, MA 02152 United States- Suffolk County Website http://www.town.winthrop.ma.us/ Town Clerk 617-846-1742 https://www.town.winthrop.ma.us/town-clerk United States Assessor 617-846-2716 https://www.town.winthrop.ma.us/assessing-department Mon-Fri: 8:30 to 5:00 1 Metcalf Square Winthrop, United States Tax Collector 617-846-3226 Mon-Fri: 8:30 to 5:00 1 Metcalf Square Winthrop, United States Fire District 617-846-3474 United States Water 617-846-1341 United States Town Hall Hours Mon-Fri: 8:30am to 5:00pm County Suffolk