Town Hall Address 223 Main St Charlestown, NH 03603 United States- Sullivan County Website http://www.charlestown-nh.gov Town Clerk (603) 826-5821 http://www.charlestown-nh.gov/Public_Documents/CharlestownNH_Clerk/index clerk@charlestown-nh.gov Mon 8 A.M. - 6 P.M.; Tue - Fri 8 A.M. - 4 P.M.; 4th Sat of each month 9 A.M. - Noon P.O. Box 834 Charlestown, NH 03603 United States Tax Collector (603) 826-5821 clerk@charlestown-nh.gov Mon 8 A.M. - 6 P.M.; Tue - Fri 8 A.M. - 4 P.M.; 4th Sat of each month 9 A.M. - Noon P.O. Box 834 Charlestown, NH 03603 United States Assessor (603) 279-0352 P.O. Box 385 Charlestown, NH 03603 United States Building (603) 826-4400 P.O. Box 385 Charlestown, 03603 United States Zoning (603) 826-5368 P.O. Box 385 Charlestown, NH 03603 United States Fire District (603) 826-5709 P.O. Box 304 Charlestown, NH 03603 United States Water (603) 826-4400 P.O. Box 385 Charlestown, NH 03603 United States Town Hall Hours Mon & Wed 8 A.M. - 6 P.M.; - Tue, Thu & Fri 8 A.M. - 4 p.m County Sullivan