Town Hall Address 10 Mansfield Dr. Stanhope, NJ 07874 United States- Sussex County Website https://www.byramtwp.org/ County Clerk 973-347-2500 Ext. 127 10 Mansfield Dr. Stanhope, NJ 07874 United States County Manager 973-347-2500 Ext. 129 10 Mansfield Dr. Stanhope, NJ 07874 United States Assessor 973-347-2500 Ext. 139 10 Mansfield Dr. Stanhope, NJ 07874 United States Tax Collector 973-347-2500 Ext. 130 10 Mansfield Dr. Stanhope, NJ 07874 United States Attorney 973-538-3800 10 Mansfield Dr. Stanhope, NJ 07874 United States Mayor 973-347-2500 Ext. 127 10 Mansfield Dr. Stanhope, NJ 07874 United States Municipal Court 973-383-4280 Ext. 4 134 Newton-Sparta Rd. Newton, NJ 07860 United States Town Hall Hours Monday - Friday 8:30am - 4:30pm County Sussex