The 203 area code serves southwestern Connecticut including Stamford, New Haven, and Bridgeport. Learn cities, time zone, scam alerts, and how to get a 203 business number.
Connecticut
Area Codes
Connecticut's economy leans on insurance and finance, centered around Bridgeport, New Haven, and Hartford. Get a local virtual phone number with any Connecticut area code.
Why businesses choose a Connecticut virtual number
A local Connecticut number shows callers which part of the state you serve.
203 came first, in 1947
203 was Connecticut's original area code, assigned in 1947. The newest, 959, arrived in 2014. Each of the 4 codes below maps to its own part of the state, so the code you pick shows which region you serve.
Connecticut, by the numbers.
Connecticut received area code 203 in 1947, covering the whole state for nearly fifty years.
The first split came in 1995: 860 took northern and eastern Connecticut, including Hartford, leaving 203 for the southwest — Bridgeport, New Haven, and Stamford.
203 got an overlay, 475, in 2009 to add capacity in the same southwestern territory.
The 860 region followed suit, gaining overlay 959 in 2014 to serve Hartford and eastern Connecticut.
Connecticut abolished county government back in 1960, yet its modern area code boundaries still roughly trace the old county lines, with 203/475 covering Fairfield and New Haven counties.
Connecticut Virtual Phone Numbers
Select any area code to get a local virtual number for that region of Connecticut.
See which Connecticut cities the 475 area code covers, why ten-digit dialing is mandatory, and how the overlay affects Bridgeport and New Haven phone numbers.
Discover which Hartford-area cities the 860 area code covers and why the 959 overlay took 15 years, plus what mandatory ten-digit dialing means for your number.
See which Connecticut cities the 959 area code covers, why it overlays 860, and what mandatory ten-digit dialing means for your new business phone number today.
Get a Connecticut number in 3 steps
From choosing a code to setting up call routing.
- 01Step 01
Choose a CT area code
Browse the Connecticut area codes above and pick the region that best serves your customers.
- 02Step 02
Select your number
Choose from the numbers available in your selected area code.
- 03Step 03
Set up routing
Configure call routing, business hours, and voicemail from your Rozper dashboard for your Connecticut number.
Connecticut number questions answered.
Everything you need to know before getting a Connecticut virtual phone number.
States that border Connecticut
Customers and teams near the Connecticutline often use a neighbouring state's codes. Here are the area codes next door.
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