Mercer County Of--general Education, Pupil Transportation 2300 Hamilton Ave Trenton, NJ 08619 Phone : (609) 588-5848 Business Category Government Offices-County Government Offices & Public Schools Mercer County Of--human Services Department Of, Superintendent Of Schools Offices, Pupil Transportation Trenton, NJ 08640 Phone : (609) 588-5848 Business Category Government Offices-County Government Offices & Public Schools