State Police 125 William J Day Blvd Dorchester, MA 02125 Phone : (617) 740-7710 Business Category State Police Mass Commonwealth Of--state Office Buildings Bureau Of, Sub-stations, South Boston 125 William J Day Blvd Dorchester, MA 02125 Phone : (617) 740-7710 Business Category Government Offices-State Government Offices-City Village & Twp Government Offices State & Local Government Offices & Public Schools Mass Commonwealth Of--state Police Dept Of, Sub-stations (non-emergencies), South Boston 125 Wm J Day Blvd Boston, MA 02121 Phone : (617) 740-7710 Business Category Government Offices-State Police Departments Government Offices State & Local Government Offices & Public Schools