Cities in area code 781

40 localities · NANPA data, current as of July 28, 2026.

Area code 781 serves 40 localities in Massachusetts, led by Waltham, Lexington, Burlington. The table lists every rate center — the billing locality each prefix is anchored to — with its share of the code's 767 active prefixes.

Ranked by active prefixes, the code's territory runs through Waltham, Lexington, Burlington, Woburn, Lynn, Dedham, Needham and Braintree, and 31 smaller communities down to single-prefix localities.

Metropolitan coverage: 40 rate centers belong to FCC top-100 metro areas.

Overlap note: 35 localities are shared with other area codes, so a neighbor's number may differ in its first three digits.

Clock-wise the coverage is Eastern.

A caller's real location can differ: numbers port between carriers and follow their owners when they move. Use the prefix tables to see where a specific number block was issued.

Showing 40 of 40
Rate centers covered by area code 781
Locality (rate center) Active prefixes Metro area All codes serving it
Waltham 72 Boston-Cambridge-Newton, MA-NH 339, 617, 781
Lexington 56 Boston-Cambridge-Newton, MA-NH 339, 781
Burlington 41 Boston-Cambridge-Newton, MA-NH 339, 781
Woburn 38 Boston-Cambridge-Newton, MA-NH 339, 781
Lynn 37 Boston-Cambridge-Newton, MA-NH 339, 781
Dedham 35 Boston-Cambridge-Newton, MA-NH 339, 617, 781
Needham 33 Boston-Cambridge-Newton, MA-NH 339, 781
Braintree 31 Boston-Cambridge-Newton, MA-NH 339, 781
Medford 24 Boston-Cambridge-Newton, MA-NH 339, 781
Canton 24 Boston-Cambridge-Newton, MA-NH 339, 781
Norwood 24 Boston-Cambridge-Newton, MA-NH 339, 781
Weymouth 24 Boston-Cambridge-Newton, MA-NH 339, 617, 781
Malden 22 Boston-Cambridge-Newton, MA-NH 339, 617, 781
Wakefield 20 Boston-Cambridge-Newton, MA-NH 339, 781
Randolph 19 Boston-Cambridge-Newton, MA-NH 339, 781
Winchester 18 Boston-Cambridge-Newton, MA-NH 781
Wellesley 18 Boston-Cambridge-Newton, MA-NH 339, 781
Revere 17 Boston-Cambridge-Newton, MA-NH 339, 781
Rockland 17 Boston-Cambridge-Newton, MA-NH 339, 781
Reading 16 Boston-Cambridge-Newton, MA-NH 781
Hingham 16 Boston-Cambridge-Newton, MA-NH 339, 781
Arlington 15 Boston-Cambridge-Newton, MA-NH 339, 781
Saugus 14 Boston-Cambridge-Newton, MA-NH 339, 617, 781
Stoneham 14 Boston-Cambridge-Newton, MA-NH 781
Norwell 13 Boston-Cambridge-Newton, MA-NH 339, 781
Kingston 13 Boston-Cambridge-Newton, MA-NH 339, 617, 781
Stoughton 13 Boston-Cambridge-Newton, MA-NH 781
Melrose 11 Boston-Cambridge-Newton, MA-NH 339, 617, 781
Lynnfield 9 Boston-Cambridge-Newton, MA-NH 781
Hanover 8 Boston-Cambridge-Newton, MA-NH 339, 781
Marshfield 8 Boston-Cambridge-Newton, MA-NH 339, 781
Sharon 7 Boston-Cambridge-Newton, MA-NH 339, 781
Scituate 6 Boston-Cambridge-Newton, MA-NH 339, 781
Marblehead 6 Boston-Cambridge-Newton, MA-NH 339, 781
Cohasset 5 Boston-Cambridge-Newton, MA-NH 339, 781
Hull 5 Boston-Cambridge-Newton, MA-NH 339, 781
Whitman 5 Boston-Cambridge-Newton, MA-NH 339, 781
Bryantville 5 Boston-Cambridge-Newton, MA-NH 339, 781
Lincoln 4 Boston-Cambridge-Newton, MA-NH 339, 781
Duxbury 4 Boston-Cambridge-Newton, MA-NH 339, 781

FAQ

What is the biggest city in area code 781?

Waltham holds the most active prefixes (72), making it the code's largest numbering locality.

How many places does 781 cover?

40 rate centers in Massachusetts hold active 781 prefixes, from Waltham down to communities with a single prefix.

Does a 781 number guarantee the caller lives in one of these places?

No — the tables show where number blocks were issued. Porting and VoIP let people keep or acquire numbers anywhere.

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