Bel Air, Aberdeen & Harford County

I-95 / US-40 / US-1 / MARC Penn Line

Harford County sits northeast of Baltimore along the I-95 / US-40 / MARC Penn Line corridor toward the Delaware line. Anchored by Bel Air (the county seat, on US-1), Aberdeen (home of the Aberdeen Proving Ground, the U.S. Army's oldest active proving ground), and Havre de Grace (the historic town at the mouth of the Susquehanna River). The region also includes Edgewood, Joppatowne, Abingdon, Fallston, Forest Hill, Jarrettsville, and Darlington. Major employers include Aberdeen Proving Ground, Army Research Laboratory, and the MARC Penn Line commuter corridor.