Connecticut Area Codes
203, 860, 475 & 959
Need to call Hartford, New Haven, or Stamford? Connect instantly to any Connecticut number. From the Gold Coast to the Quiet Corner, make HD calls directly from your browser.
How to Call Connecticut Step-by-Step
Calling Connecticut follows the standard North American Numbering Plan (NANP).
Exit Code
Dial 00 (if in Europe) or your country's specific exit code.
(Or just use + on mobile/VoIP)
US Country Code
Dial 1. This is the country code for the United States, Canada, and parts of the Caribbean.
Area Code + Number
Dial the 3-digit Connecticut area code (e.g., 203) followed by the 7-digit phone number.
Mandatory 10-Digit Dialing
Connecticut uses "overlay" area codes (475 overlays 203, and 959 overlays 860). This means you must always dial the full 10 digits (Area Code + Phone Number), even for local calls within the same town.
Connecticut Area Codes by City
Find the right area code for your destination in the Constitution State.
| 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
What is the difference between 203 and 860?
Historically, 203 covered Southern/Western CT (Fairfield/New Haven counties), while 860 covered the rest of the state (Hartford/Eastern CT). Now, 475 overlays 203, and 959 overlays 860, but the geographic split remains roughly the same.
How do I call a 475 number?
Dial +1 followed by 475 and the 7-digit number. 475 is an overlay code for the same region as 203 (Southwestern CT).
What time is it in Connecticut?
Connecticut is in the Eastern Time Zone (EST/EDT). It is the same time as New York City and 3 hours ahead of California.
Can I call Connecticut mobiles for free?
StartACall offers very cheap rates to US mobiles, often as low as $0.01/min. While not completely free, it is significantly cheaper than traditional international calling plans.
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