Bel Air North is located in west-central Harford County at (39.550439, −76.361781). It is bordered to the south by the town of Bel Air and the Bel Air South CDP. It is bordered to the southwest by Fallston. Maryland Route 23 and Prospect Mill Road form the northern border of Bel Air North. East of Bel Air, Maryland Route 22 (Churchville Road) separates Bel Air North from Bel Air South, while Baltimore Pike performs that function west of Bel Air. Winters Run forms the southwest border of the CDP, separating Bel Air North from Fallston.