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857 Area CodeBoston, MA

Area code 857 covers Boston and 11 other cities in Massachusetts: 1,325,195 people in 3 counties, led by Suffolk and Middlesex, on Eastern Time (ET). It overlays 617.

Overview

Major City
Boston
State
Massachusetts (MA)
Timezone
Eastern Time (ET)
Current Time
–:––
Overlay
Yes – shares area with 617

Nearby Area Codes

Where is area code 857?

Overview of the 857 Area Code

Geographic Coverage of the 857 Area Code

All 12 cities

Boston Area Codes Overview

What cities does area code 857 cover?

CityStatePopulationPopulation in 857% of listed-city population% of City
BostonMA673,458673,45850.9%100.0%
CambridgeMA121,186121,1869.2%100.0%
QuincyMA103,434103,4347.8%100.0%
NewtonMA90,70090,7006.9%100.0%
SomervilleMA82,14982,1496.2%100.0%
BrooklineMA58,73258,7324.4%100.0%
EverettMA51,82551,8253.9%100.0%
ChelseaMA40,24540,2453.0%100.0%
Watertown TownMA31,91531,9152.4%100.0%
MiltonMA27,00327,0032.0%100.0%
BelmontMA24,72924,7291.9%100.0%
Winthrop TownMA18,73914,7721.4%78.8%

City population is shown in full; each city's share inside 857 is measured from Census tract centroids.

What counties does area code 857 cover?

CountyStatePopulation in 857% of area-code footprint% of County
Suffolk CountyMA731,66855%92%
Middlesex CountyMA400,07030%25%
Norfolk CountyMA193,45715%27%
Sources:

Has area code 857 been reported for unwanted calls?

Yes – 2,104 FTC complaints, May 29 – Oct 1, 2026.

  • 77% robocalls
  • ↓ 3% vs prior period
  • FTC data, retrieved 2026-10-05

Most-reported subjects

  • Other40%832
  • Reducing your debt (credit cards, mortgage, student loans)26%550
  • Calls pretending to be government, businesses, or family and friends19%401

Caller ID is easily spoofed, so these figures reflect the number shown on caller ID, not the caller's true location – an area code alone never identifies a caller. The FTC does not verify the facts in these complaints.

Which prefixes and exchanges belong to area code 857?

34% assigned to a telco

  • 71% Landline
  • 29% Wireless
  • 0% Unknown
PrefixUsageCarrier
(857)200-WirelessVerizon Wireless
(857)201-WirelessSprint Spectrum
(857)202-WirelessVerizon Wireless
(857)203-LandlineVerizon New England
(857)204-LandlineOmnipoint Miami E License
(857)205-WirelessNew Cingular Wireless Pcs
(857)206-WirelessVerizon Wireless
(857)207-WirelessVerizon Wireless
(857)208-WirelessVerizon Wireless
(857)209-LandlineLevel 3 Communications
(857)210-WirelessSprint Spectrum
(857)212-WirelessSprint Spectrum
(857)213-LandlinePaetec Communications
(857)214-WirelessVerizon Wireless
(857)215-LandlineVerizon New England
(857)216-LandlineYmax Communications
(857)217-WirelessSprint Spectrum
(857)218-LandlineVerizon New England
(857)219-LandlineOnvoy
(857)220-LandlineBroadview Networks
(857)221-WirelessSprint Spectrum
(857)222-LandlineOmnipoint Miami E License
(857)223-LandlineCtc Communications
(857)224-LandlineVerizon New England
(857)225-WirelessVerizon Wireless
(857)226-LandlineTpx Communications
(857)227-LandlineMcimetro Access Transmission Services
(857)228-LandlineCtc Communications
(857)229-LandlineCtc Communications
(857)230-LandlineOmnipoint Miami E License
(857)231-WirelessSprint Spectrum
(857)232-LandlineOnvoy
(857)233-WirelessSprint Spectrum
(857)234-LandlineOmnipoint Miami E License
(857)235-LandlineVerizon New England
(857)236-LandlineMetropcs
(857)237-LandlineMetropcs
(857)238-LandlineVerizon New England
(857)239-LandlineOnvoy
(857)240-LandlinePeerless Network Of Massachusetts
(857)241-LandlineLevel 3 Communications
(857)242-LandlineTpx Communications
(857)243-LandlineOnvoy
(857)244-LandlineBandwidth.Com Clec
(857)245-LandlineYmax Communications
(857)246-LandlineMetropcs
(857)247-LandlineMetropcs
(857)248-WirelessVerizon Wireless
(857)249-LandlineMetropcs
(857)250-LandlineOmnipoint Miami E License
(857)251-LandlineMetropcs
(857)252-LandlineBroadview Networks
(857)253-LandlineBroadview Networks
(857)254-LandlineBroadview Networks
(857)255-LandlineBroadview Networks
(857)256-LandlinePeerless Network Of Massachusetts
(857)257-WirelessSprint Spectrum
(857)258-LandlineMetropcs
(857)259-WirelessNew Cingular Wireless Pcs
(857)260-WirelessVerizon Wireless
(857)261-LandlineMetropcs
(857)262-WirelessVerizon Wireless
(857)263-WirelessVerizon Wireless
(857)264-LandlineOmnipoint Miami E License
(857)265-WirelessNew Cingular Wireless Pcs
(857)266-LandlineMetropcs
(857)267-LandlineComcast Ip Phone
(857)268-WirelessVerizon Wireless
(857)269-LandlinePeerless Network Of Massachusetts
(857)270-WirelessVerizon Wireless
(857)271-WirelessSprint Spectrum
(857)272-WirelessNew Cingular Wireless Pcs
(857)273-LandlineComcast Ip Phone
(857)274-WirelessVerizon Wireless
(857)275-WirelessVerizon Wireless
(857)276-WirelessVerizon Wireless
(857)277-LandlineOmnipoint Miami E License
(857)278-WirelessVerizon Wireless
(857)279-WirelessVerizon Wireless
(857)280-LandlineOnvoy
(857)281-WirelessVerizon Wireless
(857)282-LandlineVerizon New England
(857)283-WirelessVerizon Wireless
(857)284-LandlineOmnipoint Miami E License
(857)285-LandlinePaetec Communications
(857)286-WirelessVerizon Wireless
(857)287-LandlineMetropcs
(857)288-LandlineXo Massachusets
(857)289-LandlineOnvoy
(857)290-WirelessVerizon Wireless
(857)291-WirelessVerizon Wireless
(857)292-WirelessVerizon Wireless
(857)293-LandlineBroadview Networks
(857)294-WirelessVerizon Wireless
(857)295-WirelessVerizon Wireless
(857)296-LandlineLevel 3 Communications
(857)297-LandlineComcast Ip Phone
(857)298-LandlineOnvoy Spectrum
(857)299-WirelessSprint Spectrum
(857)300-WirelessVerizon Wireless
(857)301-WirelessVerizon Wireless
(857)302-LandlineAirus
(857)303-WirelessVerizon Wireless
(857)304-LandlineTc Systems
(857)305-LandlineLevel 3 Communications
(857)306-LandlineCenturylink Communications
(857)307-LandlineVerizon New England
(857)308-LandlineOmnipoint Miami E License
(857)309-LandlineOnvoy
(857)310-LandlineOmnipoint Miami E License
(857)312-LandlineMetropcs
(857)313-LandlineOmnipoint Miami E License
(857)314-LandlineBandwidth.Com Clec
(857)315-LandlineCenturylink Communications
(857)316-LandlineOmnipoint Miami E License
(857)317-LandlineCenturylink Communications
(857)318-LandlineXo Massachusets
(857)319-WirelessVerizon Wireless
(857)320-LandlineOmnipoint Miami E License
(857)321-WirelessVerizon Wireless
(857)322-LandlineComcast Ip Phone
(857)323-LandlineVerizon New England
(857)324-WirelessVerizon Wireless
(857)325-WirelessVerizon Wireless
(857)326-WirelessVerizon Wireless
(857)327-WirelessVerizon Wireless
(857)328-LandlineVoip Innovations
(857)329-WirelessVerizon Wireless
(857)330-WirelessVerizon Wireless
(857)331-WirelessVerizon Wireless
(857)332-WirelessVerizon Wireless
(857)333-LandlineOmnipoint Miami E License
(857)334-LandlineOmnipoint Miami E License
(857)335-WirelessCsc Wireless
(857)336-LandlineOnvoy
(857)337-WirelessVerizon Wireless
(857)338-LandlineTc Systems
(857)340-LandlineOmnipoint Miami E License
(857)341-LandlineBandwidth.Com Clec
(857)342-WirelessVerizon Wireless
(857)343-WirelessVerizon Wireless
(857)344-WirelessVerizon Wireless
(857)345-WirelessVerizon Wireless
(857)346-LandlineTelengy
(857)347-LandlineAdvanced Telecom Solutions
(857)348-LandlineWavenation
(857)349-LandlineBandwidth.Com Clec
(857)350-WirelessVerizon Wireless
(857)352-LandlineOmnipoint Miami E License
(857)353-LandlineMcimetro Access Transmission Services
(857)354-LandlineOmnipoint Miami E License
(857)355-LandlineAirus
(857)356-LandlineOmnipoint Miami E License
(857)357-LandlineMegaphone
(857)358-WirelessNew Cingular Wireless Pcs
(857)359-WirelessVerizon Wireless
(857)360-WirelessVerizon Wireless
(857)361-LandlineOmnipoint Miami E License
(857)362-LandlineVerizon New England
(857)363-WirelessVerizon Wireless
(857)364-LandlineBroadview Networks
(857)365-LandlineNuso
(857)366-WirelessVerizon Wireless
(857)367-LandlineTc Systems
(857)368-LandlinePaetec Communications
(857)369-LandlineLevel 3 Communications
(857)370-LandlineOmnipoint Miami E License
(857)371-LandlineOnvoy
(857)372-WirelessVerizon Wireless
(857)373-LandlineBroadview Networks
(857)374-LandlineOnvoy
(857)375-LandlineOnvoy
(857)376-LandlineOmnipoint Miami E License
(857)377-LandlinePaetec Communications
(857)378-LandlineVerizon New England
(857)379-LandlineBandwidth.Com Clec
(857)380-LandlineOnvoy
(857)381-LandlineOmnipoint Miami E License
(857)382-LandlineOnvoy
(857)383-LandlineTc Systems
(857)384-LandlineOnvoy
(857)385-WirelessNew Cingular Wireless Pcs
(857)386-LandlineVerizon New England
(857)387-LandlineComcast Ip Phone
(857)388-LandlineCommio
(857)389-LandlineOmnipoint Miami E License
(857)390-LandlineOmnipoint Miami E License
(857)391-LandlineOmnipoint Miami E License
(857)392-LandlineOnvoy
(857)393-WirelessVerizon Wireless
(857)394-LandlineMcimetro Access Transmission Services
(857)395-LandlineOmnipoint Miami E License
(857)396-LandlineOmnipoint Miami E License
(857)397-LandlineOmnipoint Miami E License
(857)398-LandlineOmnipoint Miami E License
(857)399-LandlineBandwidth.Com Clec
(857)400-LandlineBandwidth.Com Clec
(857)401-LandlineBroadview Networks
(857)402-LandlineHd Carrier
(857)403-LandlinePaetec Communications
(857)404-LandlineComcast Ip Phone
(857)405-LandlineOmnipoint Miami E License
(857)406-WirelessVerizon Wireless
(857)407-WirelessNew Cingular Wireless Pcs
(857)408-WirelessVerizon Wireless
(857)409-WirelessVerizon Wireless
(857)410-LandlineBandwidth.Com Clec
(857)412-LandlineOnvoy
(857)413-LandlineLevel 3 Communications
(857)414-LandlineHd Carrier
(857)415-LandlineVonage America
(857)416-LandlineTpx Communications
(857)417-LandlineMetropcs
(857)418-LandlineTpx Communications
(857)419-WirelessNew Cingular Wireless Pcs
(857)420-LandlineOnvoy
(857)422-LandlineOnvoy
(857)423-LandlineOmnipoint Miami E License
(857)424-WirelessNew Cingular Wireless Pcs
(857)425-WirelessNew Cingular Wireless Pcs
(857)437-LandlineOmnipoint Miami E License
(857)443-LandlineCommio
(857)444-LandlinePeerless Network Of Massachusetts
(857)445-WirelessNew Cingular Wireless Pcs
(857)449-LandlineComcast Ip Phone
(857)452-WirelessSprint Spectrum
(857)453-LandlineLevel 3 Communications
(857)465-LandlineFractel
(857)466-LandlineTon80 Communications
(857)467-LandlineTon80 Communications
(857)468-LandlineTon80 Communications
(857)472-WirelessNew Cingular Wireless Pcs
(857)475-LandlineRadiantiq
(857)477-LandlineOnvoy
(857)488-WirelessVerizon Wireless
(857)491-LandlineLightpath Of New England
(857)492-WirelessSprint Spectrum
(857)496-LandlineComcast Ip Phone
(857)498-WirelessNew Cingular Wireless Pcs
(857)499-WirelessNew Cingular Wireless Pcs
(857)500-WirelessVerizon Wireless
(857)504-LandlineMosaic Networx
(857)505-LandlineMetropcs
(857)507-WirelessVerizon Wireless
(857)520-LandlineOnvoy
(857)523-WirelessVerizon Wireless
(857)524-LandlineXo Massachusets
(857)526-WirelessSprint Spectrum
(857)529-WirelessVerizon Wireless
(857)540-WirelessSprint Spectrum
(857)544-LandlineOmnipoint Miami E License
(857)547-LandlineBroadview Networks
(857)557-LandlineHd Carrier
(857)559-LandlineXo Massachusets
(857)567-LandlineOnvoy
(857)574-LandlineCtc Communications
(857)575-LandlineRadiantiq
(857)576-LandlineBandwidth.Com Clec
(857)577-LandlineOnvoy
(857)578-LandlineTwilio International
(857)587-LandlineHd Carrier
(857)588-LandlineXo Massachusets
(857)597-LandlineRadiantiq
(857)598-LandlineXo Massachusets
(857)600-LandlineBandwidth.Com Clec
(857)615-LandlineMetropcs
(857)626-LandlineMcimetro Access Transmission Services
(857)636-WirelessVerizon Wireless
(857)639-LandlineTon80 Communications
(857)654-LandlineOmnipoint Miami E License
(857)663-LandlineTpx Communications
(857)666-LandlineOnvoy
(857)675-LandlineRadiantiq
(857)678-LandlineRadiantiq
(857)688-LandlineFractel
(857)693-LandlineTon80 Communications
(857)701-LandlineOmnipoint Miami E License
(857)702-LandlineNuso
(857)703-WirelessVerizon Wireless
(857)706-LandlineGetgo Communications
(857)707-WirelessVerizon Wireless
(857)719-WirelessSprint Spectrum
(857)728-LandlineXo Massachusets
(857)737-LandlineTon80 Communications
(857)746-LandlineTon80 Communications
(857)753-WirelessVerizon Wireless
(857)754-LandlineOnvoy
(857)755-LandlineFractel
(857)756-LandlineMettel
(857)757-LandlineWide Voice
(857)758-LandlineFractel
(857)760-LandlineBandwidth.Com Clec
(857)762-LandlineMetropcs
(857)763-LandlineOmnipoint Miami E License
(857)766-LandlineFractel
(857)767-LandlineTon80 Communications
(857)770-LandlineIntrado Communications
(857)772-WirelessVerizon Wireless
(857)773-WirelessSprint Spectrum
(857)776-LandlineLevel 3 Communications
(857)777-LandlinePeerless Network Of Massachusetts
(857)788-LandlineSkyetel
(857)799-LandlineHd Carrier
(857)800-LandlineOnvoy
(857)810-LandlineRadiantiq
(857)814-LandlineMultiple Ocn Listing
(857)816-LandlineXo Massachusets
(857)829-WirelessSprint Spectrum
(857)832-LandlineTon80 Communications
(857)837-LandlineOnvoy
(857)847-LandlineOnvoy Spectrum
(857)855-LandlineOnvoy
(857)856-LandlineOnvoy
(857)858-LandlineOnvoy
(857)867-LandlineOnvoy Spectrum
(857)869-LandlineOmnipoint Miami E License
(857)877-LandlineOnvoy
(857)880-LandlineBarr Tell Usa
(857)887-LandlineOnvoy Spectrum
(857)888-WirelessSprint Spectrum
(857)891-LandlineOmnipoint Miami E License
(857)895-LandlineRclec
(857)919-LandlineOmnipoint Miami E License
(857)928-LandlineOmnipoint Miami E License
(857)930-LandlineRclec
(857)939-WirelessVerizon Wireless
(857)957-LandlineWide Voice
(857)961-LandlineOmnipoint Miami E License
(857)971-LandlineOnvoy
(857)972-LandlineLevel 3 Communications
(857)990-LandlineWorldcall Interconnect
(857)991-LandlineComcast Ip Phone
(857)995-LandlineOnvoy
(857)996-LandlineMcimetro Access Transmission Services
(857)997-LandlineHd Carrier
(857)998-WirelessVerizon Wireless
(857)999-LandlinePeerless Network Of Massachusetts

Frequently Asked Questions about the 857 Area Code

Who called me from a 857 number?

29% of its assigned prefixes are wireless. Largest holders: Verizon Wireless, Omnipoint Miami E License, and Onvoy.

Is 857 a scam area code?

Carriers hold 34% of its possible prefixes.

Why do I keep getting calls from the 857 area code?

Complaints fell 3% on the prior period.

Should I answer an unknown 857 number?

77% of its FTC complaints were robocalls. Its most-reported specific subject was "Reducing your debt (credit cards, mortgage, student loans)", at 26%.

How do I block calls from the 857 area code?

Blocking 857 still lets 617 numbers through.

Where is area code 857?

857 covers 12 cities and 1,325,195 residents in 3 Massachusetts counties, led by Suffolk, Middlesex, and Norfolk.

When did area code 857 go into service?

857 went into service on May 2, 2001. It was added to overlay 617.

Is 857 a real area code?

Yes: 47 carriers hold its prefixes, serving 12 cities in Suffolk, Middlesex, and Norfolk counties.

What timezone is the 857 area code in?

857 is on Eastern Time (ET).

How do I call a 857 number from abroad?

Dial +1 857, then the number.

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