Selectmens Office 818 1st Nh Tpke Northwood, NH 03261 Phone : (603) 942-5586 Business Category Government Offices-City Village & Twp Legislative Bodies Northwood Assessing Office 818 1st Nh Tpke Northwood, NH 03261 Phone : (603) 942-5586 Business Category Government Offices-City Village & Twp Legislative Bodies