Town Hall Address 54 Fairmount Ave. Chatham, NJ 07928-2393 United States- Morris County Website http://www.chathamborough.org County Clerk 973-635-0674 Ext.1 54 Fairmount Ave. Chatham, NJ 07928-2393 United States Assessor 973-635-0674 Ext. 201 54 Fairmount Ave. Chatham, NJ 07928-2393 United States Tax Collector 973-635-0674 Ext. 202 54 Fairmount Ave. Chatham, NJ 07928-2393 United States Attorney 973-415-8460 54 Fairmount Ave. Chatham, NJ 07928-2393 United States Mayor 973-635-0674 Ext. 213 54 Fairmount Ave. Chatham, NJ 07928-2393 United States Municipal Court 973-593-3026 50 Kings Rd. Madison, NJ 07940 United States County Morris