Backus Middle School 5171 South Dakota Ave Ne Washington, DC 20017 Phone : (202) 576-6110 Business Category Schools Schools-Junior High Schools-Public Schools-public--middle Schools, Backus 5171 S Dakota Ave Ne Washington, DC 20017 Phone : (202) 576-6110 Business Category Government Offices-Federal Schools Government Offices-City Village & Twp Government Offices State & Local Government Offices & Public Schools