Downtown Marlborough Drone Flight. Main Street, Marlborough, Massachusetts, United States.Marlborough Drone Flight April 2015. Marlborough (often spelled Marlboro) is a city in Middlesex County, Massachusetts, United States. The population was 38,499 at the 2010 census. Marlborough became a prosperous industrial town in the 19th century and made the transition to high technology industry in the late 20th century after the construction of the Massachusetts Turnpike.Marlborough was declared a town in 1660 and was incorporated in 1890. Filmed with DJI Phantom II @ 720p.