Town Hall Address 21 Sea St Mount Desert, ME 04662 United States- Hancock County Website http://www.mtdesert.org Town Clerk 207-276-5531 United States Tax Collector 207-276-5531 United States Assessor 207-276-5531 United States Building 207-276-5531 United States Code Enforcement 207-276-5531 United States Fire District 207-276-5111 United States Town Hall Hours Mon-Fri 8:30-4:30 County Hancock