| General Information about Area Code 203 | |
|---|---|
| Country | United States |
| State / Province / Territory | Connecticut |
| Major City | New Haven |
| Time Zone | Eastern (UTC-05:00) |
| Prefix | Primary City | County | Phone Type |
|---|---|---|---|
| 203-600 | Meriden | New Haven | Wireless |
| 203-448 | Danbury | Fairfield | Landline |
| 203-812 | New Haven | New Haven | Landline |
| 203-910 | Waterbury | New Haven | Wireless |
| 203-684 | New Haven | New Haven | Wireless |
| 203-690 | Bridgeport | Fairfield | Wireless |
| 203-877 | Milford | New Haven | Landline |
| 203-996 | New Haven | New Haven | Wireless |
| 203-631 | Meriden | New Haven | Wireless |
| 203-956 | Norwalk | Fairfield | Landline |
| 203-610 | Bridgeport | Fairfield | Landline |
| 203-566 | Stamford | Fairfield | Landline |
| 203-200 | New Haven | New Haven | Landline |
| 203-645 | New Haven | New Haven | Wireless |
| 203-746 | Danbury | Fairfield | Landline |
| 203-370 | New Haven | New Haven | Wireless |
| 203-487 | Stamford | Fairfield | Landline |
| 203-412 | New Haven | New Haven | Wireless |
| 203-361 | New Haven | New Haven | Landline |
| 203-796 | Danbury | Fairfield | Landline |