Town Hall Address 1 Municipal Plaza Monroe, NJ 08831-1900 United States- Middlesex County Website https://www.monroetwp.com/ County Clerk 732-656-4573 1 Municipal Plaza Monroe, NJ 08831-1900 United States County Admin 732-521-4400 Monroe, NJ 08831-1900 United States Assessor 732-521-4400 1 Municipal Plaza Monroe, NJ 08831-1900 United States Tax Collector 732-521-4405 1 Municipal Plaza Monroe, NJ 08831-1900 United States Attorney 908-953-9300 1 Municipal Plaza Monroe, NJ 08831-1900 United States Mayor 732-521-4400 1 Municipal Plaza Monroe, NJ 08831-1900 United States Municipal Court 732-521-4020 Ext. 21 1 Municipal Plaza Monroe, NJ 08831-1900 United States Town Hall Hours Monday - Friday: 8:30 A.M. - 4:30 P.M. County Middlesex