Area code 857

Area code 857

All Massachusetts area codes
Location
Location of area code 857
Statistics
Created	2001
LATA Code	128
Overlays	Area code 617
Major Cities	Boston Cambridge
Regions	Boston Metro Area
Time zone	Eastern (UTC-5)
Summer (DST)	Eastern (UTC-4)

Area code 857 is an overlay of parts of area code 617. It was added to create more telephone numbers. Consequently, it is mainly used for cellular phones.

Exchanges

The following table lists all local exchanges for area code 857:

857 || 488 || West Roxbury|| 02132

Area Code	Exchange	City/Town it covers	Zip Code
857	203	West Roxbury	02132
857	204	Boston
857	209	Cambridge	02142
857	220	Charlestown	02129
857	222	Boston	02284
857	223	Boston	02138
857	225	West Roxbury	02132
857	226	Charlestown
857	227	Somerville
857	228	Cambridge	02138
857	233	Boston
857	244	Cambridge	02141
857	252	Charlestown	02129
857	253	Charlestown	02129
857	254	Charlestown	02129
857	255	Charlestown	02129
857	272	Boston	02113
857	307	Brookline	02146
857	363	West Roxbury	02132
857	364	Charlestown	02129
857	366	West Roxbury	02132
857	373	Charlestown	02129
857	383	Boston	02215
857	389	Cellular
857	401	Charlestown	02129
857	403	Boston	02110
857	413	Cambridge	02142
857	445	Boston	02110
857	453	Cambridge	02142
857	496	Boston	02110
857	523	West Roxbury	02132
857	524	Boston	02210
857	526	South Grafton	01560
857	540	Boston	02134
857	547	Charlestown	02129
857	555	Cambridge	02141
857	559	Boston	02210
857	574	Cambridge	02138
857	588	Boston	02210
857	598	Cambridge	02141
857	636	West Roxbury	02132
857	728	Boston	02210
857	753	West Roxbury	02132
857	814	Cambridge	02141
857	816	Cambridge	02141
857	829	Boston	02215
857	891	Cambridge	02139
857	928	Cambridge	02139
857	931	Cambridge	02141
857	939	West Roxbury	02132
857	978	Concord	01742
857	995	Cambridge	02142
857	998	West Roxbury	02132

See also

• List of area codes in Massachusetts
• NANPA Area Code Map of Massachusetts

Commonwealth of Massachusetts Area Codes: 339, 351, 413, 508, 617, 774, 781, 857, 978
	North: 339/781
West: 339/781	Area code 617/857	East: Atlantic Ocean
	South: 339/781

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