Detailed Lookup for 203, 860, 475, 959

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

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
  • 475: An overlay to 203, implemented in 2009}
  • 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

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

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

Receiving a call from 860 or 203? Use a phone number lookup tool.

Setting Up a Virtual Connecticut Phone Number

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

Check out CT virtual numbers from Bling.

Benefits of a Connecticut VoIP Phone System

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

Explore Connecticut VoIP calling tools that support 203, 860, 475, and 959 numbers.

Getting a Business Phone Number with a CT Area Code

Whether you're launching a new business in Stamford or Hartford, having a local number matters.

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

Complete Business Phone System in Connecticut

Local and toll-free numbers, combined with AI features, ensure top-tier customer experience.

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?

203 was the first and only area code until 1995.

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, more info 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?

Some mobile carriers also offer this option during signup.

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

However, like any area code, it can be spoofed by scammers.


We hope this guide helps you navigate Connecticut area codes better.

Leave a Reply

Your email address will not be published. Required fields are marked *