Town Hall Address 19 Main St Groveton, NH 03582 United States- Coos County Website https://northumberlandnh.weebly.com/ Town Clerk (603) 636-1451 https://northumberlandnh.weebly.com/town-clerktax-collector.html northumberlandtownclerk@yahoo.com Mon - Wed & Fri 8:30 A.M. - 4 P.M.; Thu 8:30 A.M. - noon 19 Main St Groveton, NH 03582 United States Tax Collector (603) 636-1451 northumberlandtownclerk@yahoo.com Mon - Wed & Fri 8:30 A.M. - 4 P.M.; Thu 8:30 A.M. - noon 19 Main St Groveton, NH 03582 United States Assessor (603) 636-1450 Monday, Tuesday, Wednesday, Friday: 8:00-4:00 Thursday: 8:00-NOON 19 Main St Groveton, NH 03582 United States Zoning (603) 636-9817 1367 Lost Nation Rd Groveton, NH 03582 United States Fire District (603) 636-1612 37 Church St Groveton, NH 03582 United States Water (603) 636-2892 7 Town Garage Rd Groveton, NH 03582 United States Sewer (603) 636-2892 7 Town Garage Rd Groveton, NH 03582 United States Town Hall Hours Mon - Wed & Fri 8 A.M. - 4 P.M.; Thu 8 A.M. - noon County Coos