203 Area Code: Cities, Time Zone and Zip Codes
What area code is 203? The area code 203 is located in Connecticut and it serves Bridgeport, New Haven, Stamford, Waterbury, Norwalk, Danbury, Meriden, West Haven, Stratford, Milford, and some other surrounding cities. The area code 203 was created on January 1, 1947 and was first put to use on January 1, 1947. It serves as an overlay to area code 475.
The top counties that are being served by the 203 area code are Fairfield County, Litchfield County, and New Haven County.
The major cities under each of these counties that are being served by the 203 area code are listed below:
Fairfield County
The cities within Fairfield County that are served by the 203 area code include Bethel, Botsford, Bridgeport, Brookfield, Cos Cob, Danbury, Darien, Easton, Fairfield, Georgetown, Greens Farms, Greenwich, Hawleyville, Monroe, New Canaan, New Fairfield, Newtown, Norwalk, Old Greenwich, Redding, Redding Center, Redding Ridge, Ridgefield, Riverside, Sandy Hook, Shelton, Southport, Stamford, Stevenson, Stratford, Trumbull, Weston, Westport, and Wilton.
Litchfield County
The cities within Litchfield County that are served by the 203 area code include Bethlehem and Woodbury.
New Haven County
The cities within New Haven County that are served by the 203 area code include Ansonia, Beacon Falls, Bethany, Branford, Cheshire, Derby, East Haven, Guilford, Hamden, Madison, Meriden, Middlebury, Milford, Naugatuck, New Haven, North Branford, North Haven, Northford, Orange, Oxford, Prospect, Seymour, South Britain, Southbury, Wallingford, Waterbury, West Haven, Wolcott, and Woodbridge.
203 Area Code Time Zone
What time zone is 203 Area Code? The time zone in the 203 area code is the Eastern Time zone which is abbreviated as ET. This is known as America/New York Time Zone. The Eastern Standard Time is UTC/GMT -5:00 hours. The Daylight Saving Time (EDT) is +1.00 hour.
Significance of 203 Area Code
I don’t know if you notice that there is a three-digit number that precedes a telephone number any time you receive a call from your cell phone. Any time you see the three-digit code 203, it suggests that the call comes from any of the cities or counties listed above. However, there may be an exemption to this. With the use of mobile phone or roaming phone feature, the caller may not necessarily be at any of these cities or counties at the time of calling.
Nevertheless, knowing the counties and cities that the 203 area code covers can guide you when to call a particular person. This is because the person you want to call may be in a time zone that is different from your own.
Telephone Carriers in 203 Area Code
If you want to get a wireless telephone within the 203 area code, the popular wireless telephone carriers that you can approach include Cingular Wireless, Sprint, Verizon Wireless, Omnipoint, USA Mobility Wireless, Metro PCS, American Messaging (am), Peerless Network, and Southern New England Telco.
For landline, popular carriers are Southern New England Telco, Level 3 Comms, Teleport America, Brooks Fiber, Cablevision Lightpath, Teleport Comms America, Global Crossing Local Services, Paetec, Bandwidth.com, Comcast Phone, Verizon Wireless, Conversent Comms, Choice One Comms, Broadwing Comms, Paetec Comms, MCI Metro ATS, Cox Telecom, AT&T Local, CTC Comms Corp, Global Naps, Peerless Network, Verizon New York, and Sbc Internet Services.
Zip Codes in 203 Area Code
| City | County | State | Area Code | Zip Code |
| Ansonia | New Haven | Connecticut | 203 | 06401 |
| Beacon Falls | New Haven | Connecticut | 203 | 06403 |
| Bethany | New Haven | Connecticut | 203 | 06524 |
| Bethel | Fairfield | Connecticut | 203 | 06801 |
| Bethlehem | Litchfield | Connecticut | 203 | 06751 |
| Botsford | Fairfield | Connecticut | 203 | 06404 |
| Branford | New Haven | Connecticut | 203 | 06405 |
| Bridgeport | Fairfield | Connecticut | 203 | 06604 |
| Bridgeport | Fairfield | Connecticut | 203 | 06605 |
| Bridgeport | Fairfield | Connecticut | 203 | 06606 |
| Bridgeport | Fairfield | Connecticut | 203 | 06607 |
| Bridgeport | Fairfield | Connecticut | 203 | 06610 |
| Bridgeport | Fairfield | Connecticut | 203 | 06608 |
| Bridgeport | Fairfield | Connecticut | 203 | 06650 |
| Bridgeport | Fairfield | Connecticut | 203 | 06673 |
| Bridgeport | Fairfield | Connecticut | 203 | 06602 |
| Bridgeport | Fairfield | Connecticut | 203 | 06601 |
| Bridgeport | Fairfield | Connecticut | 203 | 06699 |
| Brookfield | Fairfield | Connecticut | 203 | 06804 |
| Cheshire | New Haven | Connecticut | 203 | 06410 |
| Cheshire | New Haven | Connecticut | 203 | 06411 |
| Cheshire | New Haven | Connecticut | 203 | 06408 |
| Cos Cob | Fairfield | Connecticut | 203 | 06807 |
| Danbury | Fairfield | Connecticut | 203 | 06810 |
| Danbury | Fairfield | Connecticut | 203 | 06811 |
| Danbury | Fairfield | Connecticut | 203 | 06814 |
| Danbury | Fairfield | Connecticut | 203 | 06813 |
| Danbury | Fairfield | Connecticut | 203 | 06816 |
| Danbury | Fairfield | Connecticut | 203 | 06817 |
| Darien | Fairfield | Connecticut | 203 | 06820 |
| Derby | New Haven | Connecticut | 203 | 06418 |
| East Haven | New Haven | Connecticut | 203 | 06512 |
| Easton | Fairfield | Connecticut | 203 | 06612 |
| Fairfield | Fairfield | Connecticut | 203 | 06825 |
| Fairfield | Fairfield | Connecticut | 203 | 06824 |
| Fairfield | Fairfield | Connecticut | 203 | 06828 |
| Georgetown | Fairfield | Connecticut | 203 | 06829 |
| Greens Farms | Fairfield | Connecticut | 203 | 06838 |
| Greenwich | Fairfield | Connecticut | 203 | 06830 |
| Greenwich | Fairfield | Connecticut | 203 | 06831 |
| Greenwich | Fairfield | Connecticut | 203 | 06836 |
| Guilford | New Haven | Connecticut | 203 | 06437 |
| Hamden | New Haven | Connecticut | 203 | 06514 |
| Hamden | New Haven | Connecticut | 203 | 06517 |
| Hamden | New Haven | Connecticut | 203 | 06518 |
| Hawleyville | Fairfield | Connecticut | 203 | 06440 |
| Madison | New Haven | Connecticut | 203 | 06443 |
| Meriden | New Haven | Connecticut | 203 | 06450 |
| Meriden | New Haven | Connecticut | 203 | 06451 |
| Middlebury | New Haven | Connecticut | 203 | 06762 |
| Milford | New Haven | Connecticut | 203 | 06461 |
| Milford | New Haven | Connecticut | 203 | 06460 |
| Monroe | Fairfield | Connecticut | 203 | 06468 |
| Naugatuck | New Haven | Connecticut | 203 | 06770 |
| New Canaan | Fairfield | Connecticut | 203 | 06840 |
| New Fairfield | Fairfield | Connecticut | 203 | 06812 |
| New Haven | New Haven | Connecticut | 203 | 06511 |
| New Haven | New Haven | Connecticut | 203 | 06513 |
| New Haven | New Haven | Connecticut | 203 | 06515 |
| New Haven | New Haven | Connecticut | 203 | 06519 |
| New Haven | New Haven | Connecticut | 203 | 06510 |
| New Haven | New Haven | Connecticut | 203 | 06535 |
| New Haven | New Haven | Connecticut | 203 | 06521 |
| New Haven | New Haven | Connecticut | 203 | 06533 |
| New Haven | New Haven | Connecticut | 203 | 06503 |
| New Haven | New Haven | Connecticut | 203 | 06537 |
| New Haven | New Haven | Connecticut | 203 | 06505 |
| New Haven | New Haven | Connecticut | 203 | 06520 |
| New Haven | New Haven | Connecticut | 203 | 06507 |
| New Haven | New Haven | Connecticut | 203 | 06532 |
| New Haven | New Haven | Connecticut | 203 | 06501 |
| New Haven | New Haven | Connecticut | 203 | 06502 |
| New Haven | New Haven | Connecticut | 203 | 06508 |
| New Haven | New Haven | Connecticut | 203 | 06530 |
| New Haven | New Haven | Connecticut | 203 | 06509 |
| New Haven | New Haven | Connecticut | 203 | 06540 |
| New Haven | New Haven | Connecticut | 203 | 06506 |
| New Haven | New Haven | Connecticut | 203 | 06504 |
| New Haven | New Haven | Connecticut | 203 | 06538 |
| New Haven | New Haven | Connecticut | 203 | 06534 |
| New Haven | New Haven | Connecticut | 203 | 06531 |
| New Haven | New Haven | Connecticut | 203 | 06536 |
| Newtown | Fairfield | Connecticut | 203 | 06470 |
| North Branford | New Haven | Connecticut | 203 | 06471 |
| North Haven | New Haven | Connecticut | 203 | 06473 |
| Northford | New Haven | Connecticut | 203 | 06472 |
| Norwalk | Fairfield | Connecticut | 203 | 06850 |
| Norwalk | Fairfield | Connecticut | 203 | 06853 |
| Norwalk | Fairfield | Connecticut | 203 | 06854 |
| Norwalk | Fairfield | Connecticut | 203 | 06855 |
| Norwalk | Fairfield | Connecticut | 203 | 06851 |
| Norwalk | Fairfield | Connecticut | 203 | 06852 |
| Norwalk | Fairfield | Connecticut | 203 | 06860 |
| Norwalk | Fairfield | Connecticut | 203 | 06859 |
| Norwalk | Fairfield | Connecticut | 203 | 06858 |
| Norwalk | Fairfield | Connecticut | 203 | 06856 |
| Norwalk | Fairfield | Connecticut | 203 | 06857 |
| Old Greenwich | Fairfield | Connecticut | 203 | 06870 |
| Orange | New Haven | Connecticut | 203 | 06477 |
| Oxford | New Haven | Connecticut | 203 | 06478 |
| Prospect | New Haven | Connecticut | 203 | 06712 |
| Redding | Fairfield | Connecticut | 203 | 06896 |
| Redding Center | Fairfield | Connecticut | 203 | 06875 |
| Redding Ridge | Fairfield | Connecticut | 203 | 06876 |
| Ridgefield | Fairfield | Connecticut | 203 | 06877 |
| Ridgefield | Fairfield | Connecticut | 203 | 06879 |
| Riverside | Fairfield | Connecticut | 203 | 06878 |
| Sandy Hook | Fairfield | Connecticut | 203 | 06482 |
| Seymour | New Haven | Connecticut | 203 | 06483 |
| Shelton | Fairfield | Connecticut | 203 | 06484 |
| South Britain | New Haven | Connecticut | 203 | 06487 |
| Southbury | New Haven | Connecticut | 203 | 06488 |
| Southport | Fairfield | Connecticut | 203 | 06890 |
| Stamford | Fairfield | Connecticut | 203 | 06901 |
| Stamford | Fairfield | Connecticut | 203 | 06902 |
| Stamford | Fairfield | Connecticut | 203 | 06905 |
| Stamford | Fairfield | Connecticut | 203 | 06906 |
| Stamford | Fairfield | Connecticut | 203 | 06907 |
| Stamford | Fairfield | Connecticut | 203 | 06903 |
| Stamford | Fairfield | Connecticut | 203 | 06914 |
| Stamford | Fairfield | Connecticut | 203 | 06913 |
| Stamford | Fairfield | Connecticut | 203 | 06922 |
| Stamford | Fairfield | Connecticut | 203 | 06921 |
| Stamford | Fairfield | Connecticut | 203 | 06928 |
| Stamford | Fairfield | Connecticut | 203 | 06927 |
| Stamford | Fairfield | Connecticut | 203 | 06920 |
| Stamford | Fairfield | Connecticut | 203 | 06910 |
| Stamford | Fairfield | Connecticut | 203 | 06925 |
| Stamford | Fairfield | Connecticut | 203 | 06912 |
| Stamford | Fairfield | Connecticut | 203 | 06926 |
| Stamford | Fairfield | Connecticut | 203 | 06911 |
| Stamford | Fairfield | Connecticut | 203 | 06904 |
| Stevenson | Fairfield | Connecticut | 203 | 06491 |
| Stratford | Fairfield | Connecticut | 203 | 06614 |
| Stratford | Fairfield | Connecticut | 203 | 06615 |
| Trumbull | Fairfield | Connecticut | 203 | 06611 |
| Wallingford | New Haven | Connecticut | 203 | 06492 |
| Wallingford | New Haven | Connecticut | 203 | 06494 |
| Wallingford | New Haven | Connecticut | 203 | 06493 |
| Wallingford | New Haven | Connecticut | 203 | 06495 |
| Waterbury | New Haven | Connecticut | 203 | 06702 |
| Waterbury | New Haven | Connecticut | 203 | 06705 |
| Waterbury | New Haven | Connecticut | 203 | 06708 |
| Waterbury | New Haven | Connecticut | 203 | 06710 |
| Waterbury | New Haven | Connecticut | 203 | 06704 |
| Waterbury | New Haven | Connecticut | 203 | 06706 |
| Waterbury | New Haven | Connecticut | 203 | 06725 |
| Waterbury | New Haven | Connecticut | 203 | 06724 |
| Waterbury | New Haven | Connecticut | 203 | 06722 |
| Waterbury | New Haven | Connecticut | 203 | 06723 |
| Waterbury | New Haven | Connecticut | 203 | 06701 |
| Waterbury | New Haven | Connecticut | 203 | 06720 |
| Waterbury | New Haven | Connecticut | 203 | 06749 |
| Waterbury | New Haven | Connecticut | 203 | 06726 |
| Waterbury | New Haven | Connecticut | 203 | 06721 |
| Waterbury | New Haven | Connecticut | 203 | 06703 |
| West Haven | New Haven | Connecticut | 203 | 06516 |
| Weston | Fairfield | Connecticut | 203 | 06883 |
| Westport | Fairfield | Connecticut | 203 | 06880 |
| Westport | Fairfield | Connecticut | 203 | 06888 |
| Westport | Fairfield | Connecticut | 203 | 06881 |
| Westport | Fairfield | Connecticut | 203 | 06889 |
| Wilton | Fairfield | Connecticut | 203 | 06897 |
| Wolcott | New Haven | Connecticut | 203 | 06716 |
| Woodbridge | New Haven | Connecticut | 203 | 06525 |
| Woodbury | Litchfield | Connecticut | 203 | 06798 |