Town Hall Address 425 E. Broad St. Westfield, NJ 07090 United States- Union County Website https://www.westfieldnj.gov/ County Clerk 908-789-4033 Ext. 4032 425 E. Broad St. Westfield, NJ 07090 United States Assessor 908-789-4055 425 E. Broad St. Westfield, NJ 07090 United States Tax Collector 908-789-4051 425 E. Broad St. Westfield, NJ 07090 United States Attorney 973-845-7642 425 E. Broad St. Westfield, NJ 07090 United States Mayor 908-789-4040 425 E. Broad St. Westfield, NJ 07090 United States Municipal Court 908-789-4060 425 E. Broad St. Westfield, NJ 07090 United States Town Hall Hours Monday through Friday, 8:30 – 4:30 County Union