Connecticut area codes

Explore all 4 area codes in Connecticut. Choose a code to see its coverage, dialing rules, and phone lookup.

All 4 area codes in Connecticut

  • 203

    New Haven, Stamford

  • 475

    New Haven, Stamford

  • 860

    Hartford, New London

  • 959

    Hartford, New Britain

Connecticut area code questions

How many area codes does Connecticut have?

Connecticut has 4 active geographic area codes in this directory: 203, 475, 860 and 959.

Which area code should I choose in Connecticut?

Start with the first three digits after +1 on the number you want to check. The codes in this directory are associated with places including New Haven and Hartford. The listed places are examples, not a complete map of each code’s boundaries.

Which Connecticut area codes share coverage?

NANPA groups these codes in shared numbering complexes: 203 / 475; 860 / 959. Members can serve overlapping areas; being in the same complex does not necessarily mean identical geographic boundaries.

How do I dial a number in Connecticut?

Open the individual area code to check its local dialing rule. For a phone lookup, enter +1 followed by the three-digit area code and the seven-digit number. A state or area code alone is not enough to look up a particular number.

Does an area code from Connecticut show where the caller is?

No. An area code describes a number’s assigned region. People can keep numbers after moving, use them while traveling, or place internet-based calls. Caller ID can also be spoofed, so the code does not confirm the caller’s location or identity.