Town Hall Address 263 Somerset St. North Plainfield, NJ 07060-4846 United States- Somerset County Website http://www.northplainfield.org County Clerk 908-769-2910 263 Somerset St. North Plainfield, NJ 07060-4846 United States County Admin 908-769-2902 North Plainfield, NJ 07060-4846 United States Assessor 908-769-2906 263 Somerset St. North Plainfield, NJ 07060-4846 United States Tax Collector 908-769-2908 263 Somerset St. North Plainfield, NJ 07060-4846 United States Attorney 732-805-3360 263 Somerset St. North Plainfield, NJ 07060-4846 United States Mayor 908-769-2902 263 Somerset St. North Plainfield, NJ 07060-4846 United States Municipal Court 908-769-2265 263 Somerset St. Plainfield, NJ 07060-4846 United States County Somerset