475 Area Code

The 475 area code is a telephone area code serving the southwestern part of Connecticut.

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Area Code 475 Location: Connecticut

Area code 475 covers the southwestern portion of Connecticut.

Counties Served by Area Code 475:

  • Fairfield (except the Town of Sherman)
  • New Haven
  • Litchfield (the towns of Woodbury, Bethlehem, and a small part of Roxbury)

Major Cities in the 475 Service Area:

Other Cities and Towns:

  • Ansonia
  • Beacon Falls
  • Bethany
  • Bethel
  • Bethlehem
  • Branford
  • Brookfield
  • Cheshire
  • Darien
  • Derby
  • East Haven
  • Easton
  • Fairfield
  • Greenwich
  • Guilford
  • Hamden
  • Madison
  • Middlebury
  • Milford
  • Monroe
  • Naugatuck
  • New Canaan
  • New Fairfield
  • Newtown
  • North Branford
  • North Haven
  • Orange
  • Oxford
  • Prospect
  • Redding
  • Ridgefield
  • Roxbury (small part)
  • Seymour
  • Shelton
  • Southbury
  • Stratford
  • Trumbull
  • Wallingford
  • West Haven
  • Weston
  • Westport
  • Wilton
  • Wolcott
  • Woodbridge
  • Woodbury

Overlay System

Area code 475 is an overlay for area code 203. Area code 203 was established in 1947. Area code 475 was added on December 12, 2009. All callers in Connecticut must dial all calls with ten digits.

Area Code 475 Location Map

Area Code 475 Location on Connecticut Map

Area code 475 is a general purpose code which was placed in service on December 12, 2009.

475 Area Code Prefixes

Our Connecticut phone number lookup service will analyze the three-digit prefix of any 475 area code phone number and will show which telecommunications company and rate center it was initially assigned to. This prefix code data may help to determine the U.S. carrier, Connecticut geographic region, and local calling area associated with the phone number.

Phone numbers follow the following structure under the North American Numbering Plan:

  • NPA- area code (where the number was originally assigned)
  • NXX - Central office code that locates the specific neighborhood and identifies the service provider
  • XXXX - Subscriber number identifies the individual phone line within that local exchange

Understanding the area code can help you determine if a call is local to your area. However, keep in mind that due to mobile number portability and VoIP services, the caller may be anywhere in the United States, so it’s best to search for the most recent phone number details.

Prefixes by Company

Company Number of Prefixes
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 16
OMNIPOINT COMMUNICATIONS, INC. - CT 6
METROPCS, INC. 4
NEW CINGULAR WIRELESS PCS, LLC - DC 4
CENTURYLINK COMMUNICATIONS, LLC 2
LEVEL 3 COMMUNICATIONS, LLC - CT 2
PEERLESS NETWORK OF CONNECTICUT, LLC - CT 2
CHARTER FIBERLINK CT-CCO, LLC - CT 1
CHOICE ONE COMMUNICATIONS, INC. - CT 1
ONVOY, LLC - CT 1
PAETEC COMMUNICATIONS, LLC - CT 1
SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 1
SPRINT SPECTRUM, L.P. 1
TELEPORT COMMUNICATIONS AMERICA, LLC - CT 1
VONAGE AMERICA LLC 1

Carrier names have been updated from their original FCC assignments to reflect current companies following mergers, acquisitions, and rebranding. Updates were determined using AI-assisted research and may not be accurate or reflect up to date changes. This data is provided without warranties of accuracy or completeness.

Prefixes by Rate Center

Rate Center Number of Prefixes
NEW HAVEN 13
NORWALK 6
DANBURY 5
WATERBURY 5
BRIDGEPORT 4
STAMFORD 3
ANSONIDRBY 2
FAIRFIELD 1
HUNTINGTON 1
MERIDEN 1
NAUGATUCK 1
RIDGEFIELD 1
WOODBURY 1

Other Connecticut Area Codes

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