 arlington is a town in middlesex county, massachusetts, united states, six miles (10&nbsp;km) northwest of boston. the population was 42,844 at the 2010 census. ==history==  the town of arlington was settled by european colonists in 1635 as a village within the boundaries of cambridge, massachusetts under the name menotomy, an algonquian word meaning "swift running water". a larger area, including land that was later to beco
Arlington,_Massachusetts Towns_in_Massachusetts Towns_in_Middlesex_County,_Massachusetts