Town Hall Address 20 Main Street Mendon, MA 01756 United States- Worcester County Website http://www.mendonma.gov/ Town Clerk 508-473-1085 http://www.mendonma.gov/town-clerk United States Assessor 508-473-2738 http://www.mendonma.gov/board-of-assessors Mon-Thurs: 9:00-4:00 20 Main Street Mendon, United States Tax Collector 508-634-2413 Mon-Thurs: 8:30-4:00 20 Main Street, PO Box 11 Mendon, United States Fire District 508-473-5330 United States Water 508-478-2737 United States Town Hall Hours Mon-Thurs: 8:00-4:00 County Worcester