Area Code 339 History:
Area code 339 was put into service. Area code 339 is an overlay of area code 781.
Counties in Massachusetts within area code 339 include:
Essex County, Middlesex County, Norfolk County, Plymouth County, and Suffolk County.
Major cities or places in Massachusetts within area code 339 include:
Area codes 339 and 781 serve east-central Massachusetts, and the suburbs of Boston including Arlington, Braintree, Burlington, Dedham, Lexington, Marblehead, Medford, Melrose, Needham, Norwood, Randolph, Revere, Saugus, Stoneham, Wakefield, Waltham, Wellesley, Weymouth, Winchester, and Woburn in addition to many smaller communities within the service area.