Town Hall Address 1 Monmuent Square Alton, NH 03809 United States- Belknap County Website https://www.alton.nh.gov/ Town Clerk (603) 875-2101 https://www.alton.nh.gov/government/town-clerk-taxes townlerk@alton.nh.gov Mon - Fri 8:15 A.M. - 4:30 P.M. ; 1st and last Thu 8:15 A.M. - 7 P.M. P.O. Box 637 Alton, NH 03809 United States Tax Collector (603) 875-2101 townlerk@alton.nh.gov Mon - Fri 8:15 A.M. - 4:30 P.M. ; 1st and last Thu 8:15 A.M. - 7 P.M. P.O. Box 637 Alton, NH 03809 United States Assessor (603) 875-0205 https://www.alton.nh.gov/government/assessing-department assessor@alton.nh.gov Monday - Friday 8:00 A.M. - 4:30 P.M. (open until 7:00PM on the first and last Thursday of each month) P.O. Box 659 Alton, NH 03809 United States Building (603)-875-2164 P.O. Box 659 Alton, 03809 United States Zoning (603) 875-2162 P.O. Box 659 Alton, NH 03809 United States Fire District (603) 875-0222 P.O. Box 472 Alton, NH 03809 United States Water (603) 875-4200 awaterwk@metrocast.net P.O. Box 803 Alton, NH 03809 United States Sewer (603) 875-5801 P.O. Box 659 Alton, NH 03809 United States Town Hall Hours Mon - Fri 8 A.M. - 4:30 P.M.; 1st and last Thu 8 A.M. - 7 p.m Water Source Courtney Mitchell, WC Sewer Source Scott Simonds, SWS County Belknap