List of Massachusetts area codes

Massachusetts is divided into five distinct numbering plan areas (NPAs), which are served by nine area codes in the North American Numbering Plan (NANP),^[7] organized as four overlay complexes and a single-area code NPA.

Numbering plan areas and area codes since May 2001

September 1997^[1] – May 2001^[2]

July 1988^[3] – September 1997^[4][5]

October 1947 – July 1988^[6]

Eastern Massachusetts has area codes 339, 351, 508, 617, 774, 781, 857, and 978.^[8] Western Massachusetts has area code 413.^[8]

The numbering plan areas are organized into two local access and transport areas (LATAs): 126 comprises the western part, and 128 covers the central and eastern parts.^[9]

Area code	Region
339/781	Burlington, Lynn, Waltham, Weymouth and other areas of Greater Boston
351/978	Athol, Concord, Fitchburg, Gloucester, Haverhill, Lowell, Salem and northeastern Massachusetts
413	Amherst, Greenfield, Holyoke, North Adams, Pittsfield, Springfield and western Massachusetts
508/774	Brockton, Framingham, Hyannis, New Bedford, Plymouth, Worcester and southeastern Massachusetts
617/857	Cambridge, Newton, Quincy and close-in Boston suburbs

See also

• List of North American Numbering Plan area codes
• Original North American area codes