Town Hall Address 229 Main St Nashua, NH 03063 United States- Hillsborough County Website https://www.nashuanh.gov/ Town Clerk (603) 589-3010 https://www.nashuanh.gov/193/City-Clerks-Office Mon - Fri 8 A.M. - 5 P.M. P.O. Box 2019 Nashua, NH 03061 United States Tax Collector (603) 589-3185 P.O. Box 2019 Nashua, NH 03061 United States Assessor (603) 589-3040 Monday - Friday 8 A.M. - 5 P.M. P.O. Box 2019 Nashua, NH 03061 United States Building (603) 589-3080 P.O. Box 2019 Nashua, 03061 United States Fire District (603) 594-3651 70 East Hollis St Nashua, NH 03061 United States Water (603) 913-2362 P.O. Box 1947 Nashua, NH 03061 United States Town Hall Hours Mon - Fri 8 A.M. - 5 P.M. County Hillsborough