Connecticut Area Codes
203, 860, 475 & 959
Ringing Hartford, New Haven, or Stamford? Pay a low rate per minute to reach any Connecticut number, with nothing to install. From the Gold Coast to the Quiet Corner, place HD calls straight from your browser.
Dialing Connecticut, One Step at a Time
Connecticut numbers sit inside the North American Numbering Plan (NANP), so the sequence is simple.
Exit Code
Start with 00 across Europe, or whichever exit code your country uses.
(On mobile or VoIP, a simple + does the same job)
US Country Code
Next comes 1, the shared country code for the United States, Canada, and several Caribbean nations.
Area Code + Number
Add the 3-digit Connecticut area code, such as 203, and then the 7-digit local number.
10 Digits Are Always Required
Because Connecticut runs overlay codes (475 sits over 203, and 959 sits over 860), you always dial all 10 digits (area code plus the phone number), even when you are calling someone in the same town.
City by City Area Codes in Connecticut
Match your destination across the Constitution State with its correct area code.
| City | Region | Code |
|---|---|---|
| Hartford | Central / Capital | 860 / 959 |
| New Haven | South Central | 203 / 475 |
| Bridgeport | Gold Coast | 203 / 475 |
| Stamford | Southwest | 203 / 475 |
| Waterbury | Naugatuck Valley | 203 / 475 |
| City | Region | Code |
|---|---|---|
| Norwalk | Southwest | 203 / 475 |
| Danbury | Western CT | 203 / 475 |
| New London | Southeast | 860 / 959 |
| Greenwich | Gold Coast | 203 / 475 |
| Middletown | Central | 860 / 959 |
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Frequently Asked Questions
How do 203 and 860 differ?
Traditionally 203 served Southern and Western CT (Fairfield and New Haven counties), while 860 handled the rest of the state (Hartford and Eastern CT). Today 475 overlays 203 and 959 overlays 860, yet that geographic divide is still roughly intact.
How should I dial a 475 number?
Enter +1, then 475, then the 7-digit number. 475 is simply an overlay sitting on the same area as 203 in Southwestern CT.
What is the current time in Connecticut?
Connecticut runs on Eastern Time (EST/EDT). That matches New York City and puts it 3 hours ahead of California.
Is it free to call Connecticut mobiles?
Intercalling keeps rates to US mobiles very low and competitive. It is not free, but it costs far less than the usual international calling plans, and you only pay per minute.
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