Town Hall Address 75 Hill Rd Dummer, NH 03588 United States- Coos County Website http://www.dummernh.com/ Town Clerk (603) 449-2006 townofdummer@gmail.com Tue and Thur 1:00 P.M. - 7:00 P.M. 75 Hill Rd Dummer, NH 03588 United States Tax Collector (603) 449-2006 townofdummer@gmail.com Tue and Thur 1:00 P.M. - 7:00 P.M. 75 Hill Rd Dummer, NH 03588 United States Assessor http://data.avitarassociates.com/ United States Town Hall Hours Mon-Fri 8:30 A.M. - 1:30 P.M. County Coos