Town Hall Address 100 Port Murray Rd. Port Murray, NJ 07865 United States- Warren County Website http://www.mansfieldtwp-nj.com/ County Clerk 908-689-6151 Ext. 128 100 Port Murray Rd. Port Murray, NJ 07865 United States Assessor 908-689-6151 Ext. 117 100 Port Murray Rd. Port Murray, NJ 07865 United States Tax Collector 908-689-6151 Ext. 115 100 Port Murray Rd. Port Murray, NJ 07865 United States Attorney 908-852-2600 100 Port Murray Rd. Port Murray, NJ 07865 United States Mayor 908-339-2516 100 Port Murray Rd. Port Murray, NJ 07865 United States Municipal Court 908-689-7066 100 Port Murray Rd. Port Murray, NJ 07865 United States Town Hall Hours 9am – 4:30pm M-F County Warren