CONNECTICUT AREA CODES

Connecticut Area Codes

Connecticut Area Codes

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Connecticut Area Codes: What You Need to Know About 203, 860, 475, and 959

Trying to get a virtual number in Connecticut? This guide has all the details.

Map of Connecticut Area Codes

Connecticut Area Code Map

What Are the Area Codes in Connecticut?

Connecticut is served by four area codes: 203, 860, 475, and 959.

  • 203: Original area code, covering Southwestern Connecticut
  • 860: Created in 1995 to serve Hartford, New London, and Waterbury
  • Covers the same region as 203}
  • 959: Overlay for 860}

Which Cities Use Each Area Code?

Here’s how the area codes are distributed across Connecticut cities:

203 and 475 Area Codes

  • Stamford
  • Bridgeport
  • New Haven
  • Norwalk
  • Danbury

860 and 959 Area Codes

  • Hartford
  • New Britain
  • New London
  • Middletown
  • Manchester

History of Connecticut Area Codes

Overlays 475 and 959 were added in 2009 and 2014 respectively due to increased demand from mobile and VoIP numbers.

More historical details can be found on Wikipedia's area code page.

Why Connecticut Uses Overlay Codes

To avoid splitting cities into new area codes, overlays like 475 and 959 allow new numbers in the same region.

Learn more about 10-digit dialing from the FCC guide.

How to Identify a Connecticut Phone Number

These tools help you identify the origin of any number in Connecticut.

Setting Up a Virtual Connecticut Phone Number

A virtual number with a 203 or 860 area code can improve trust and conversions.

Check out virtual number services from Bling.

Benefits of a Connecticut VoIP Phone System

Perfect for startups and small businesses looking to expand into the Connecticut market.

Explore VoIP systems for Connecticut that support 203, 860, 475, and 959 numbers.

Getting a Business Phone Number with a CT Area Code

It gives you credibility, local identity, and helps build customer trust.

Start by selecting a provider like Bling to get a Connecticut business number. Learn more at this page.

Complete Business Phone System in Connecticut

You’ll want a phone system that supports call queues, IVR, CRM integration, and voicemail.

Set up a complete business phone system in Connecticut with Bling Cloud’s scalable solution.

Spam & Robocalls from CT Area Codes

If you receive a suspicious call from 475 or 959, be cautious and validate using number lookup tools.

Block scam calls using CallBlocker or read NANPA updates for changes to Connecticut codes.

Video: How Area Codes Work

Watch this YouTube video on how area codes are assigned and why overlays matter.

FAQs About Connecticut Area Codes

Q1: What is the oldest area code in Connecticut?

The 203 area code is the original, dating back to 1947.

Q2: Why were 475 and 959 created?

To handle number exhaustion in their respective regions.

Q3: Do I need to dial all 10 digits in Connecticut?

Yes, because of the does Connecticut have new area codes overlay system, 10-digit dialing is mandatory for all local calls in Connecticut.

Q4: Can I choose my area code when getting a new number?

Some mobile carriers also offer this option during signup.

Q5: Is 959 a real area code or a scam?

959 is a valid area code in Connecticut used since 2014.


From personal calls to business communication, choosing the right area code makes a difference.

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