Lynnfield is a town in Essex County, Massachusetts, in the United States. As of the 2000 census, the town population was 11,542.
The town of Lynnfield was first settled in 1638 and was made a district in 1782. It was later officially incorporated in 1842. Historically, Lynnfield functioned as two separate villages connected by one governing body: in Lynnfield Center resided a mostly agricultural population, while South Lynnfield was a crossroad situated amongst neighboring larger towns. During this time, the town had two inns, a granite rock quarry, a small carbonated beverage bottler, and various eating institutions.
The stagecoach line north from Boston to Portsmouth, New Hampshire, known locally as "The Newburyport Turnpike", ran through South Lynnfield. Later this roadway was officially re-named U.S. Route 1, the route which brought many people north to the small town during the post-World War Two population surge. Lynnfield had attractions such as horse shows and ballroom dancing. Lynnfield has since become a modern, chiefly residential suburb of Boston. Along with the communities of Chelsea, Lynn, Salem, Marblehead, Danvers, Middleton, Andover, Methuen, Haverhill, Amesbury and Salisbury, Lynnfield was a part of "The Gerry-mander" so described by the Boston Gazette on March 26, 1812.