Howard County--police Department Of, Administrative Services, Warrants-booking Ellicott City, MD 21043 Phone : (410) 313-3770 Business Category Government Offices-County Police Departments Government Offices & Public Schools Howard County--police Department, Warrants Ellicott City, MD 21043 Phone : (410) 313-3770 Business Category Government Offices-County Police Departments Government Offices & Public Schools