Town Hall Address 754 North Groton Rd Groton, NH 03241 United States- Grafton County Website http://www.grotonnh.org/ Town Clerk (603) 744-8849 http://www.grotonnh.org/townclerk/tcindex.htm townclerk@grotonnh.org Mon, Wed & Fri 9 A.M. - 4 P.M.; Tue 4:00 P.M. - 6:00 P.M.; or by appointment. 754 North Groton Rd Groton, NH 03241 United States Tax Collector (603) 744-8849 townclerk@grotonnh.org Mon, Wed & Fri 9 A.M. - 4 P.M.; Tue 4:00 P.M. - 6:00 P.M.; or by appointment. 754 North Groton Rd Groton, NH 03241 United States Assessor (603) 798-4419 http://data.avitarassociates.com/ 150 Suncook Valley Rd Hebron, NH 03241 United States Town Hall Hours Mon - Thu 8 A.M. - 4 P.M. County Grafton