Town Hall Address 39 Trinity St. Newton, NJ 07860-1823 United States- Sussex County Website http://www.newtontownhall.com County Clerk 973-383-3521 Ext. 232 39 Trinity St. Newton, NJ 07860-1823 United States Assessor 973-383-3521 Ext. 234 Wednesday: 9:00 A.M. - 1:00 P.M. 39 Trinity St. Newton, NJ 07860-1823 United States Tax Collector 973-383-3521 Ext. 239 39 Trinity St. Newton, NJ 07860-1823 United States Attorney 973-729-1880 39 Trinity St. Newton, NJ 07860-1823 United States Mayor 973-383-3521 Ext. 453 39 Trinity St. Newton, NJ 07860-1823 United States Municipal Court 973-383-3521 39 Trinity St. Newton, NJ 07860-1823 United States County Sussex