Town Hall Address 111 Greenbrook Rd. Green Brook, NJ 08812-2501 United States- Somerset County Website http://www.greenbrooktwp.org County Clerk 732-968-1023 Ext. 6601 111 Greenbrook Rd. Green Brook, NJ 08812-2501 United States Assessor 732-968-1023 Ext. 6615 111 Greenbrook Rd. Green Brook, NJ 08812-2501 United States Tax Collector 732-968-1023 Ext. 6604 111 Greenbrook Rd. Green Brook, NJ 08812-2501 United States Attorney 908-757-7800 111 Greenbrook Rd. Green Brook, NJ 08812-2501 United States Mayor 732-968-1023 111 Greenbrook Rd. Green Brook, NJ 08812-2501 United States Municipal Court 732-968-1110 111 Greenbrook Rd. Green Brook, NJ 08812-2501 United States County Somerset