The town of Bel Air is the county seat of Harford County, Maryland. According to the 2010 United States Census the population of the town was 10,120.GeographyBel Air is located at .According to the United States Census Bureau, the town has a total area of 3.03sqmi, of which, 3.02sqmi is land and 0.01sqmi is water.ClimateBel Air is a transition between the humid continental and humid subtropical climates. Bel Air features hot, often humid summers, mild, wet springs, pleasant falls and cool to cold winters. The average precipitation for Bel Air is around 40-43 inches while snowfall averages 19–24 inches.TransportationBel Air is located on U.S. Route 1, and several miles north of Interstate 95. Route 1 has both a bypass around Bel Air and Hickory, and a business route snaking through downtown. Both are connected to I-95 by Maryland Route 24 (at Edgewood) and Maryland Route 543 (at Riverside).In the mid 20th century the Maryland and Pennsylvania Railroad ("Ma and Pa") ran through town, but the tracks were dismantled in 1958. The station was located (at milepost 26.5) on Rockspring Ave. between Broadway and Ellendale St. Much of the railroad's former route in and around Bel Air is now the Ma and Pa walking trail, which cuts through various wooded sections of town in and around Heavenly Waters Park.
