Area Code Details for: 203
Location
State
Connecticut
Country
US
Map
Details
State | Connecticut (CT) |
Time Zone | Eastern Time |
Parent NPA | - |
Relief Planning in Progress | No |
In Service Date | January 1, 1947 |
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Cities
| Zipcode | City | County |
|---|---|---|
| 06401 | Ansonia | Naugatuck Valley |
| 06403 | Beacon Falls | Naugatuck Valley |
| 06404 | Botsford | Western Connecticut |
| 06405 | Branford | South Central Regional |
| 06408 | Cheshire | Naugatuck Valley |
| 06410 | Cheshire | Naugatuck Valley |
| 06411 | Cheshire | Naugatuck Valley |
| 06418 | Derby | Naugatuck Valley |
| 06437 | Guilford | South Central Regional |
| 06440 | Hawleyville | Western Connecticut |
| 06443 | Madison | South Central Regional |
| 06450 | Meriden | South Central Regional |
| 06451 | Meriden | South Central Regional |
| 06460 | Milford | South Central Regional |
| 06461 | Milford | South Central Regional |
| 06468 | Monroe | Connecticut Metropolitan |
| 06470 | Newtown | Western Connecticut |
| 06471 | North Branford | South Central Regional |
| 06472 | Northford | South Central Regional |
| 06473 | North Haven | South Central Regional |
| 06477 | Orange | South Central Regional |
| 06478 | Oxford | Naugatuck Valley |
| 06482 | Sandy Hook | Western Connecticut |
| 06483 | Seymour | Naugatuck Valley |
| 06484 | Shelton | Naugatuck Valley |
| 06487 | South Britain | Naugatuck Valley |
| 06488 | Southbury | Naugatuck Valley |
| 06491 | Stevenson | Connecticut Metropolitan |
| 06492 | Wallingford | South Central Regional |
| 06493 | Wallingford | South Central Regional |
| 06494 | Wallingford | South Central Regional |
| 06495 | Wallingford | South Central Regional |
| 06501 | New Haven | South Central Regional |
| 06502 | New Haven | South Central Regional |
| 06503 | New Haven | South Central Regional |
| 06504 | New Haven | South Central Regional |
| 06505 | New Haven | South Central Regional |
| 06506 | New Haven | South Central Regional |
| 06507 | New Haven | South Central Regional |
| 06508 | New Haven | South Central Regional |
| 06509 | New Haven | South Central Regional |
| 06510 | New Haven | South Central Regional |
| 06511 | New Haven | South Central Regional |
| 06512 | New Haven | South Central Regional |
| 06513 | New Haven | South Central Regional |
| 06514 | Hamden | South Central Regional |
| 06515 | New Haven | South Central Regional |
| 06516 | West Haven | South Central Regional |
| 06517 | Hamden | South Central Regional |
| 06518 | Hamden | South Central Regional |
| 06519 | New Haven | South Central Regional |
| 06520 | New Haven | South Central Regional |
| 06521 | New Haven | South Central Regional |
| 06524 | Bethany | South Central Regional |
| 06525 | New Haven | South Central Regional |
| 06530 | New Haven | South Central Regional |
| 06531 | New Haven | South Central Regional |
| 06532 | New Haven | South Central Regional |
| 06533 | New Haven | South Central Regional |
| 06534 | New Haven | South Central Regional |
| 06535 | New Haven | South Central Regional |
| 06536 | New Haven | South Central Regional |
| 06537 | New Haven | South Central Regional |
| 06538 | New Haven | South Central Regional |
| 06540 | New Haven | South Central Regional |
| 06601 | Bridgeport | Connecticut Metropolitan |
| 06602 | Bridgeport | Connecticut Metropolitan |
| 06604 | Bridgeport | Connecticut Metropolitan |
| 06605 | Bridgeport | Connecticut Metropolitan |
| 06606 | Bridgeport | Connecticut Metropolitan |
| 06607 | Bridgeport | Connecticut Metropolitan |
| 06608 | Bridgeport | Connecticut Metropolitan |
| 06610 | Bridgeport | Connecticut Metropolitan |
| 06611 | Trumbull | Connecticut Metropolitan |
| 06612 | Easton | Connecticut Metropolitan |
| 06614 | Stratford | Connecticut Metropolitan |
| 06615 | Stratford | Connecticut Metropolitan |
| 06673 | Bridgeport | Connecticut Metropolitan |
| 06699 | Bridgeport | Connecticut Metropolitan |
| 06701 | Waterbury | Naugatuck Valley |
| 06702 | Waterbury | Naugatuck Valley |
| 06703 | Waterbury | Naugatuck Valley |
| 06704 | Waterbury | Naugatuck Valley |
| 06705 | Waterbury | Naugatuck Valley |
| 06706 | Waterbury | Naugatuck Valley |
| 06708 | Waterbury | Naugatuck Valley |
| 06710 | Waterbury | Naugatuck Valley |
| 06712 | Prospect | Naugatuck Valley |
| 06716 | Wolcott | Naugatuck Valley |
| 06720 | Waterbury | Naugatuck Valley |
| 06721 | Waterbury | Naugatuck Valley |
| 06722 | Waterbury | Naugatuck Valley |
| 06723 | Waterbury | Naugatuck Valley |
| 06724 | Waterbury | Naugatuck Valley |
| 06725 | Waterbury | Naugatuck Valley |
| 06726 | Waterbury | Naugatuck Valley |
| 06749 | Waterbury | Naugatuck Valley |
| 06762 | Middlebury | Naugatuck Valley |
| 06770 | Naugatuck | Naugatuck Valley |
| 06783 | Roxbury | Northwest Hills |
| 06798 | Woodbury | Naugatuck Valley |
| 06801 | Bethel | Western Connecticut |
| 06804 | Brookfield | Western Connecticut |
| 06807 | Cos Cob | Western Connecticut |
| 06810 | Danbury | Western Connecticut |
| 06811 | Danbury | Western Connecticut |
| 06812 | New Fairfield | Western Connecticut |
| 06813 | Danbury | Western Connecticut |
| 06814 | Danbury | Western Connecticut |
| 06816 | Danbury | Western Connecticut |
| 06817 | Danbury | Western Connecticut |
| 06820 | Darien | Western Connecticut |
| 06824 | Fairfield | Connecticut Metropolitan |
| 06825 | Fairfield | Connecticut Metropolitan |
| 06828 | Fairfield | Connecticut Metropolitan |
| 06829 | Georgetown | Western Connecticut |
| 06830 | Greenwich | Western Connecticut |
| 06831 | Greenwich | Western Connecticut |
| 06836 | Greenwich | Western Connecticut |
| 06838 | Greens Farms | Western Connecticut |
| 06840 | New Canaan | Western Connecticut |
| 06850 | Norwalk | Western Connecticut |
| 06851 | Norwalk | Western Connecticut |
| 06852 | Norwalk | Western Connecticut |
| 06853 | Norwalk | Western Connecticut |
| 06854 | Norwalk | Western Connecticut |
| 06855 | Norwalk | Western Connecticut |
| 06856 | Norwalk | Western Connecticut |
| 06857 | Norwalk | Western Connecticut |
| 06858 | Norwalk | Western Connecticut |
| 06860 | Norwalk | Western Connecticut |
| 06870 | Old Greenwich | Western Connecticut |
| 06875 | Redding Center | Fairfield |
| 06876 | Redding Ridge | Western Connecticut |
| 06877 | Ridgefield | Western Connecticut |
| 06878 | Riverside | Western Connecticut |
| 06879 | Ridgefield | Western Connecticut |
| 06880 | Westport | Western Connecticut |
| 06881 | Westport | Western Connecticut |
| 06883 | Weston | Western Connecticut |
| 06888 | Westport | Western Connecticut |
| 06889 | Westport | Western Connecticut |
| 06890 | Southport | Connecticut Metropolitan |
| 06896 | Redding | Western Connecticut |
| 06897 | Wilton | Western Connecticut |
| 06901 | Stamford | Western Connecticut |
| 06902 | Stamford | Western Connecticut |
| 06903 | Stamford | Western Connecticut |
| 06904 | Stamford | Western Connecticut |
| 06905 | Stamford | Western Connecticut |
| 06906 | Stamford | Western Connecticut |
| 06907 | Stamford | Western Connecticut |
| 06910 | Stamford | Western Connecticut |
| 06911 | Stamford | Western Connecticut |
| 06912 | Stamford | Western Connecticut |
| 06913 | Stamford | Western Connecticut |
| 06914 | Stamford | Western Connecticut |
| 06920 | Stamford | Western Connecticut |
| 06921 | Stamford | Western Connecticut |
| 06922 | Stamford | Western Connecticut |
| 06926 | Stamford | Western Connecticut |
| 06927 | Stamford | Western Connecticut |
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