Town Hall Address 340 Franklin Ave. Wyckoff, NJ 07481-1907 United States- Bergen County Website http://www.wyckoff-nj.com County Clerk 201-891-7000 340 Franklin Ave. Wyckoff, NJ 07481-1907 United States County Admin 201-891-7000 340 Franklin Ave. Wyckoff, NJ 07481-1907 United States Assessor 201-891-7000 340 Franklin Ave. Wyckoff, NJ 07481-1907 United States Attorney 201-891-6955 340 Franklin Ave. Wyckoff, NJ 07481-1907 United States Mayor 201-891-7000 340 Franklin Ave. Wyckoff, NJ 07481-1907 United States Municipal Court 201-891-7000 Ext. 110 340 Franklin Ave. Wyckoff, NJ 07481-1907 United States County Bergen