Town Hall Address 75 N. Martine Ave. Fanwood, NJ 07023-1397 United States- Union County Website http://www.fanwoodnj.org County Clerk 908-322-8236 Ext. 123 75 N. Martine Ave. Fanwood, NJ 07023-1397 United States County Admin 908-322-8236 Ext. 123 75 N. Martine Ave. Fanwood, NJ 07023-1397 United States Assessor 908-322-8236 Ext. 131 Wednesday: 12:00 P.M. - 1:00 P.M., Thursday: 6:00 P.M. - 8:00 P.M. 75 N. Martine Ave. Fanwood, NJ 07023-1397 United States Tax Collector 908-322-8236 Ext. 126 75 N. Martine Ave. Fanwood, NJ 07023-1397 United States Attorney 908-931-1150 75 N. Martine Ave. Fanwood, NJ 07023-1397 United States Mayor 908-322-8236 Ext. 124 75 N. Martine Ave. Fanwood, NJ 07023-1397 United States Municipal Court 908-322-6750 75 N. Martine Ave. Fanwood, NJ 07023-1397 United States County Union