Town Hall Address 1033 Weldon Rd. Lake Hopatcong, NJ 07849 United States- Morris County Website http://www.jeffersontownship.net County Clerk 973-208-6132 1033 Weldon Rd. Lake Hopatcong, NJ 07849 United States County Admin 973-208-6102 1033 Weldon Rd. Lake Hopatcong, NJ 07849 United States Assessor 973-208-6104 1033 Weldon Rd. Lake Hopatcong, NJ 07849 United States Tax Collector 973-208-6107 1033 Weldon Rd. Lake Hopatcong, NJ 07849 United States Attorney 908-852-2600 1033 Weldon Rd. Lake Hopatcong, NJ 07849 United States Mayor 973-208-6102 1033 Weldon Rd. Lake Hopatcong, NJ 07849 United States Municipal Court 973-208-6129 1033 Weldon Rd. Lake Hopatcong, NJ 07849 United States County Morris