Harford County--schools, Schools, North Harford High Bel Air, MD 21014 Phone : (410) 638-3650 Business Category Schools Government Offices-County Government Offices & Public Schools North Harford High School 211 Pylesville Rd Pylesville, MD 21132 Phone : (410) 638-3650 Business Category Schools Schools-Public Schools-Senior High Harford County--pupil Services, Schools, North Harford High Bel Air, MD 21014 Phone : (410) 638-3650 Business Category Schools Government Offices-County Government Offices & Public Schools