Town Hall Address 312 Broad Ave. Leonia, NJ 07605 United States- Bergen County Website https://www.leonianj.gov/about/borough_history.htm County Clerk 201-592-5780 Ext. 256 Tuesday - Thursday: 9:30 A.M. - 1:30 P.M. 312 Broad Ave. Leonia, NJ 07605 United States County Admin 201-592-5780 Ext. 221 312 Broad Ave. Leonia, NJ 07605 United States Assessor 201-592-5780 Ext. 221 Thursday Evenings 312 Broad Ave. Leonia, NJ 07605 United States Tax Collector 201-592-5780 Ext. 224 312 Broad Ave. Leonia, NJ 07605 United States Attorney 201-944-2300 312 Broad Ave. Leonia, NJ 07605 United States Mayor 201-944-2300 312 Broad Ave. Leonia, NJ 07605 United States Municipal Court 201-592-5780 312 Broad Ave. Leonia, NJ 07605-1894 United States Town Hall Hours Monday 8:30am - 4:30pm Tuesday 8:30am - 8:00pm Wednesday 8:30am - 4:30pm Thursday 8:30am - 4:30pm Friday 8:30 - Noon County Bergen