Town Hall Address 23 Washington St. P.O. Box 411 Mt. Holly, NJ 08060 United States- Burlington County Website http://www.twp.mountholly.nj.us County Clerk 609-845-1101 23 Washington St. P.O. Box 411 Mt. Holly, NJ 08060 United States Assessor 609-845-1113 23 Washington St. P.O. Box 411 Mt. Holly, NJ 08060 United States Tax Collector 609-845-1108 23 Washington St. P.O. Box 411 Mt. Holly, NJ 08060 United States Attorney 609-518-1256 23 Washington St. P.O. Box 411 Mt. Holly, NJ 08060 United States Mayor 609-845-1100 Ext. 301 23 Washington St. P.O. Box 411 Mt. Holly, NJ 08060 United States Municipal Court 609-845-1121 23 Washington St. P.O. Box 411 Mt. Holly, NJ 08060 United States County Burlington