Local Phone Numbers
Connecticut
203 Area Code
203 Area Code
Port Your Number or Get a Connecticut Overlay Code with DialLink
Establish a Local Presence in Connecticut
No Office Needed
Want to reach clients in Stamford, New Haven, or Bridgeport? The 203 area code is one of the most widely recognized in Connecticut and shows your business is embedded in the state's economic core. However, due to high demand, new 203 numbers are no longer available. If you already have a 203 number, you can easily port it to DialLink. If not, overlay code 475 is available now and covers the exact same region.
With DialLink, startups and SMBs can secure a local Connecticut number and run all business communications through our powerful AI-powered cloud phone system — with no complex setup or IT overhead.
Why Choose a 203 Area Code?
The 203 area code covers Southwestern Connecticut, including major cities like Stamford, New Haven, Bridgeport, Norwalk, and Danbury. It was one of the original area codes created in 1947 and is deeply associated with the state's financial, academic, and healthcare centers.
Due to the limited availability of 203 numbers, 475 was introduced as an overlay. Both codes now serve the same area, so whether you get a 203 or 475 number, your business will have strong local recognition in Southern Connecticut.
Get More Than a Local Number
When you choose a local number from DialLink, you're getting more than just digits:
AI Voice Agents
Automate routine calls, appointment booking, and more
AI call tagging & summaries
Get insights into calls and improve follow-ups
Advanced call handling
Customize call flows, routing, and voicemail rules
Work from anywhere
Answer calls on mobile, desktop, web app, or desk phones
Plug-and-play setup
Get started in minutes with no IT experts required
AI-powered business messaging
Get AI-generated suggestions and send replies instantly
Whether you're based in Connecticut or simply want to break into the market, DialLink's numbers help your business sound local, feel accessible, and stay organized.
Who Can Benefit from a Local Phone Number
Startups and small businesses growing in Southern Connecticut
Remote teams working with clients in Southern Connecticut
Law firms, universities, healthcare providers, and consultants
Customer support teams improving call pickup
Expand Beyond Area Code 203
Today Connecticut. Tomorrow nationwide. DialLink supports local and international numbers in 100+ countries — all powered by one easy-to-use, AI-driven system.
Frequently Asked Questions
Where is area code 203?
Area code 203 is located in Connecticut, primarily covering the Southwestern portion of the state.
What cities use the 203 area code?
Cities in the 203 area code include Stamford, Bridgeport, New Haven, Danbury, Norwalk, and surrounding towns in Fairfield and New Haven counties.
Where in the U.S. is area code 203?
Area code 203 is in the Northeastern United States, serving parts of Southern Connecticut, just outside New York City.
What is the overlay for the 203 area code?
The 475 area code is the overlay for 203. Both codes serve the same geographic region and are used interchangeably for new number assignments.
What is an overlay area code?
An overlay is a second area code introduced to the same region as an existing one. It increases the availability of phone numbers without changing existing numbers.
Ready to Build Your Presence in Connecticut?
Start today with DialLink's AI-powered cloud phone system and secure your local number. Project professionalism, build trust, and scale your customer communications with ease.
