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Connecticut Area Codes

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State: Connecticut (CT)
Area Codes: 4
Timezone: Eastern (EDT)
Current Time: 5:37 AM

About Connecticut Area Codes

Connecticut (CT) uses 4 telephone area codes to serve its residents and businesses. With an estimated population of 4,074,019, Connecticut is one of the smaller states in the North American Numbering Plan (NANP). The state is primarily in the Eastern Time Zone (EDT). The current local time in Connecticut is 5:37 AM.

The largest cities in Connecticut include Bridgeport (pop. 924,449), Hartford (pop. 905,152), New Haven (pop. 564,830), Norwich (pop. 200,289) and Waterbury (pop. 189,614) . Connecticut has 8 counties spread across its territory. Each area code in CT covers a geographic region of the state, with some areas using overlay codes that share the same geographic territory as an existing area code.

When calling a Connecticut phone number from outside the area code, you must dial the full 10-digit number: the 3-digit area code followed by the 7-digit local number. Many parts of Connecticut now require 10-digit dialing even for local calls due to overlay area codes and the nationwide 988 Suicide & Crisis Lifeline implementation.

All Connecticut Area Codes

The table below lists every active area code in Connecticut, along with the major city served and other cities covered by each code.

Area Code Major City Other Cities
203 Bridgeport Hartford, New Haven, Waterbury, Danbury, Stamford, Norwalk, Meriden, West Haven and more
475 Bridgeport Hartford, New Haven, Stamford, Norwalk, Middletown, New London, Old Greenwich, Bloomfield and more
860 Hartford New Haven, Norwich, Stamford, Norwalk, New Britain, Bristol, Middletown, Torrington and more
959 Hartford New Haven, Stamford, Norwalk, Middletown, New London, Bloomfield, Cheshire, New York

Largest Cities in Connecticut

These are the largest cities in Connecticut by population, along with their primary area codes and counties.

City Population County
Bridgeport 924,449 Fairfield County
Hartford 905,152 Hartford County
New Haven 564,830 New Haven County
Norwich 200,289 New London County
Waterbury 189,614 New Haven County
Danbury 176,030 Fairfield County
Stamford 129,638 Fairfield County
Norwalk 88,816 Fairfield County
New Britain 72,495 Hartford County
Bristol 59,947 Hartford County

Frequently Asked Questions

Connecticut has 4 active area codes. These include 203 (Bridgeport), 475 (Bridgeport), 860 (Hartford) and 959 (Hartford) .

Connecticut is primarily in the Eastern Time Zone (EDT). The current local time is 5:37 AM.

The area code covering the most cities in Connecticut is 860, which serves Hartford and 81+ other communities.

Yes, most areas in Connecticut now require 10-digit dialing (area code + 7-digit number) for all local calls. This requirement was implemented across the United States starting in October 2021 to support the 988 Suicide & Crisis Lifeline. Even if you are calling within the same area code, you need to dial all 10 digits.

To call a Connecticut number from within the United States, dial the area code followed by the 7-digit phone number (e.g., 203-XXX-XXXX). From outside the US, dial your country's exit code, then 1 (the US country code), then the full 10-digit number.

Connecticut has 8 counties. The state's total estimated population is 4,074,019, spread across these counties and served by 4 area codes.

Bridgeport is served by area code 203. Connecticut has 4 area codes in total — see the complete list above.
Connecticut at a Glance
  • Abbreviation CT
  • Area Codes 4
  • Population 4,074,019
  • Counties 8
  • Cities 110
  • Time Zone Eastern
  • Current Time 5:37 AM
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