Town Hall Address 319 E. State St. Trenton, NJ 08608-1865 United States- Mercer County Website http://www.trentonnj.org/ County Clerk 609-989-3187 319 E. State St. Trenton, NJ 08608-1865 United States Assessor 609-989-3091 319 E. State St. Trenton, NJ 08608-1865 United States Tax Collector 609-989-3070 319 E. State St. Trenton, NJ 08608-1865 United States Attorney 609-989-3011 319 E. State St. Trenton, NJ 08608-1865 United States Mayor 609-989-3030 319 E. State St. Trenton, NJ 08608-1865 United States Municipal Court 609-989-3700 225 N. Clinton Ave P.O. Box 1360 Trenton, NJ 08609 United States Town Hall Hours Monday - Friday: 8:30 A.M. - 4:30 P.M. County Mercer