Boston Metro

Area Code 617: Boston, MA Local Numbers

Area code 617 is the original telephone area code serving Boston, Massachusetts and surrounding metro cities including Cambridge, Somerville, and Quincy. Established in 1947 as one of the first North American Numbering Plan codes.

847+ Boston businesses already use Brilo

617 Quick Facts

Live data

📍

Region

Boston Metro, MA

🕐

Time Zone

Eastern (ET)

🗺️

Major Cities

Boston, Cambridge, Quincy

📞

Overlay For

Area Code 857

Numbers Available

9 numbers available

Boston Metro

Area Code 617: Boston, MA Local Numbers

Area code 617 is the original telephone area code serving Boston, Massachusetts and surrounding metro cities including Cambridge, Somerville, and Quincy. Established in 1947 as one of the first North American Numbering Plan codes.

847+ Boston businesses already use Brilo

617 Quick Facts

Live data

📍

Region

Boston Metro, MA

🕐

Time Zone

Eastern (ET)

🗺️

Major Cities

Boston, Cambridge, Quincy

📞

Overlay For

Area Code 857

Numbers Available

9 numbers available

Area Code

Feature Answer

What is Area Code 617?

What is Area Code 617?

What is Area Code 617?

What is Area Code 617?

Area code 617 is a North American telephone area code assigned to Boston, Massachusetts and its surrounding metro area. First assigned in 1947 as one of the original 86 area codes in the North American Numbering Plan, 617 has served Boston longer than any other area code. It covers cities including Cambridge, Quincy, Somerville, Brookline, and Newton, and is a local (non-toll-free) area code in the Eastern Time Zone.

Area code 617 is a North American telephone area code assigned to Boston, Massachusetts and its surrounding metro area. First assigned in 1947 as one of the original 86 area codes in the North American Numbering Plan, 617 has served Boston longer than any other area code. It covers cities including Cambridge, Quincy, Somerville, Brookline, and Newton, and is a local (non-toll-free) area code in the Eastern Time Zone.

For more than five decades, 617 was Boston's only area code. By 2001, the rapid growth of mobile phones, fax lines, and internet dial-up had exhausted the available 617 numbers. The Massachusetts Department of Telecommunications introduced 857 as an overlay — meaning both codes now serve the exact same geographic territory simultaneously. Despite the overlay, 617 remains the city's heritage area code and the one most strongly associated with Boston identity.

For more than five decades, 617 was Boston's only area code. By 2001, the rapid growth of mobile phones, fax lines, and internet dial-up had exhausted the available 617 numbers. The Massachusetts Department of Telecommunications introduced 857 as an overlay — meaning both codes now serve the exact same geographic territory simultaneously. Despite the overlay, 617 remains the city's heritage area code and the one most strongly associated with Boston identity.

📍

Boston Metro, MA

Eastern (ET)

9 numbers available

📅

Est. 1947

Area Code

Coverage Data

Cities & Zip Codes in Area Code 617

Cities & Zip Codes in Area Code 617

Cities & Zip Codes in Area Code 617

All cities and communities served by the 617 area code — same coverage as 857, since the two share territory.

All cities and communities served by the 617 area code — same coverage as 857, since the two share territory.

617 Area Code City Coverage

847+

City

County

Zip Codes

Est. Businesses

Boston

Suffolk

02101 – 02137

~87,000

Brookline

Middlesex

02138 – 02142

~12,400

Cambridge

Middlesex

02169 – 02171

~8,700

Newton

Norfolk

02143 – 02145

~6,200

Quincy

Norfolk

02445 – 02447

~5,800

Somerville

Middlesex

02458 – 02468

~9,100

Watertown

Middlesex

02471 – 02472

~3,400

Winthrop

Suffolk

02152

~1,200

Area Code

Spam Inteligence

Is Area Code 617 Spam?

Is Area Code 617 Spam?

Is Area Code 617 Spam?

We aggregate spam reports from thousands of sources. Here's what the data shows for 617 this month.

617 Spam Activity Score — Last 30 Days

Low

Low

Low

19% of reported US area codes have higher spam activity

📊 Total reports this month

98

📞 Top reported prefixes

617-208, 617-712

📈 Trend vs last month

↓ 9% lower

🏆 Trust ranking

Top 22% of US area codes

BUSINESS INSIGHT

Why does Boston send unknown 617 calls to voicemail?

Even with a heritage area code like 617, unknown local numbers trigger call screening. Boston customers are 3.8x more likely to answer a verified business number with a proper caller ID profile than an unfamiliar string of digits.

Even with a heritage area code like 617, unknown local numbers trigger call screening. Boston customers are 3.8x more likely to answer a verified business number with a proper caller ID profile than an unfamiliar string of digits.

3.8x higher answer rate with a verified 617 number

Stand out from spam. A Brilo 617 number comes with a verified business profile, AI-powered calling, and live transcripts — so you're never mistaken for a robocall.

Stand out from spam. A Brilo 617 number comes with a verified business profile, AI-powered calling, and live transcripts — so you're never mistaken for a robocall.

Area Code

Why Go local

Why Boston Businesses Choose a 617 Number

Why Boston Businesses Choose a 617 Number

Why Boston Businesses Choose a 617 Number

Why Boston Businesses Choose a 617 Number

847+ Boston companies trust Brilo to handle their calls with a 617 number and AI-powered agents. There's a reason the city's original area code keeps winning over toll-free alternatives — it sounds like home.

847+ Boston companies trust Brilo to handle their calls with a 617 number and AI-powered agents. There's a reason the city's original area code keeps winning over toll-free alternatives — it sounds like home.

Local vs Other Number Types

📍 Local Number

📍 Local Number

82% answer rate

82% answer rate

📞 Toll-Free 800 Number

📞 Toll-Free 800 Number

32% answer rate

32% answer rate

📱 Out-of-State Number

📱 Out-of-State Number

19% answer rate

19% answer rate

❓ Unknown / VoIP

❓ Unknown / VoIP

9% answer rate

9% answer rate

📍

Local Trust Signal

Boston customers are 4.3x more likely to answer a call from a local 617 number than an out-of-state line. A familiar code is the first trust signal — make sure yours is on it.

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AI-Powered Calls

Brilo's AI agents take every inbound and outbound call on your 617 line, day and night. Natural conversations, live transcripts, no missed leads — even when your Boston team is heads-down on something else.

Setup in 2 Minutes

Pick a 617 number, prompt your AI agent, and ship in under two minutes. Connects to Salesforce, HubSpot, and 6,000+ other tools your Boston ops team already uses.

Brilo 2.0

Area Code 617 Questions, Answered

Area Code 617 Questions, Answered

What every Boston business wants to know about getting a 617 number.

What every Boston business wants to know about getting a 617 number.

Who uses area code 617?

Who uses area code 617?

Is 617 a toll-free number?

Is 617 a toll-free number?

Can I get a 617 number if my business isn't in Massachusetts?

Can I get a 617 number if my business isn't in Massachusetts?

What area code is 617 from?

What area code is 617 from?

Is a 617 number associated with spam?

Is a 617 number associated with spam?

How do I set up a 617 number with AI calling?

How do I set up a 617 number with AI calling?

What is the difference between 617 and 857?

What is the difference between 617 and 857?

Do I need to dial the area code for local calls within 617?

Do I need to dial the area code for local calls within 617?

Never Miss a Customer Call Again. Let AI Close the Loop—24/7.

Never Miss a Customer Call Again. Let AI Close the Loop—24/7.

Never Miss a Customer Call Again. Let AI Close the Loop—24/7.

Never Miss a Customer Call Again. Let AI Close the Loop—24/7.

Join 1,000+ businesses using Brilo to answer, qualify, and convert calls with AI—instantly.

Join 1,000+ businesses using Brilo to answer, qualify, and convert calls with AI—instantly.