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

If you're trying to understand area codes in Connecticut, you're not alone.

Map of Connecticut Area Codes

What Are the Area Codes in Connecticut?

Here’s a detailed look at the list of Connecticut area codes:

• 203: Original area code, covering cities like New Haven, Stamford, and Bridgeport
• 860: Created in 1995 to serve Northern and Eastern regions
• Covers the same region as 203}
• Introduced in 2014 to support growing demand}

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

With population and business growth, 860 was added in 1995.

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

Why Connecticut Uses Overlay Codes

This requires 10-digit dialing, but it’s a more user-friendly approach for residents and businesses.

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.

• Whitepages
• TrueCaller
• Nomorobo

Setting Up a Virtual Connecticut Phone Number

Choose a provider that offers reliable VoIP and virtual number setup.

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

Spam and robocalls are a growing issue across all states including Connecticut.

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?

They are overlays for 203 and 860, respectively.

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

Yes, because of the 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?

Yes, many VoIP and virtual providers let you pick from 203, 860, 475, or 959.

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

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

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Whether you're in Stamford or Hartford, or managing calls from out-of-state, a local number improves credibility and reach.