The Boomtown Historic District comprises the western and southern portions of Martinsburg, West Virginia, generally along the alignments of West King Street and Winchester Avenue, following the general path of the town's electric streetcar system. It includes a former industrial section of the town, home to a number of textile mills, as well as the housing that was built for mill workers. Industrial buildings include the former homes of the Shenandoah Pants Company, Brooklyn Brass Works and the Interwoven Mills. The Crawford Woolen and Cashmere Mills stand along Stephen Street.