Lynn is the eighth-largest municipality in Massachusetts, United States, and the largest city in Essex County. Situated on the Atlantic Ocean, 3.7 miles north of the Boston city line at Suffolk Downs, Lynn is part of Greater Boston's urban inner core. Settled by Europeans in 1629, Lynn is the 5th oldest colonial settlement in the Commonwealth. An early industrial center, Lynn was long colloquially referred to as the "City of Sin", owing to its historical reputation for crime and vice.