Town Hall Address 1 St. Mary's Pl. Denville, NJ 07834 United States- Morris County Website http://www.denvillenj.org County Clerk 973-625-8300 Ext. 232 1 St. Mary's Pl. Denville, NJ 07834 United States Assessor 973-625-8300 Ext. 292 1 St. Mary's Pl. Denville, NJ 07834 United States Tax Collector 973-625-8300 Ext. 273 1 St. Mary's Pl. Denville, NJ 07834 United States Attorney 973-334-1900 1 St. Mary's Pl. Denville, NJ 07834 United States Mayor 973-625-8300 Ext. 224 1 St. Mary's Pl. Denville, NJ 07834 United States Municipal Court 973-625-8300 1 St. Mary's Pl. Denville, NJ 07834 United States County Morris