Town Hall Address 46 Mountain Blvd. Warren, NJ 07059-5695 United States- Somerset County Website http://www.warrennj.org County Clerk 908-753-8000 Ext. 223 46 Mountain Blvd. Warren, NJ 07059-5695 United States County Admin 908-753-8000 Ext. 250 46 Mountain Blvd. Warren, NJ 07059-5695 United States Assessor 908-753-8000 Ext. 234 46 Mountain Blvd. Warren, NJ 07059-5695 United States Tax Collector 908-753-8000 Ext. 232 46 Mountain Blvd. Warren, NJ 07059-5695 United States Attorney 908-757-7800 46 Mountain Blvd. Warren, NJ 07059-5695 United States Mayor 908-753-8000 Ext. 223 46 Mountain Blvd. Warren, NJ 07059-5695 United States Municipal Court 908-753-1225 46 Mountain Blvd. Warren, NJ 07059-5695 United States County Somerset