Martinsburg is a city in and the county seat of Berkeley County. Martinsburg is the ninth largest municipality in the state and is one of the core cities in the Hagerstown-Martinsburg, MD-WV Metropolitan Statistical Area. U.S. Route 11 runs through the center of town, and Interstate 81 passes along the northern side of the town giving people easy access to both enter and exit the town. Martinsburg’s major employers consist of retail, government, healthcare, and the army. There is an Amtrak station located in downtown Martinsburg and I-81 and Rt. 11 both run through Martinsburg.