| 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 |
|---|---|---|---|
| 203-839 | Norwalk | Fairfield | Wireless |
| 203-396 | Bridgeport | Fairfield | Landline |
| 203-826 | Danbury | Fairfield | Landline |
| 203-863 | Greenwich | Fairfield | Landline |
| 203-496 | Greenwich | Fairfield | Wireless |
| 203-255 | Fairfield | Fairfield | Landline |
| 203-655 | Darien | Fairfield | Landline |
| 203-262 | Southbury | New Haven | Landline |
| 203-914 | Norwalk | Fairfield | Landline |
| 203-790 | Danbury | Fairfield | Landline |
| 203-264 | Southbury | New Haven | Landline |
| 203-780 | Waterbury | New Haven | Wireless |
| 203-536 | Stamford | Fairfield | Wireless |
| 203-378 | Bridgeport | Fairfield | Landline |
| 203-206 | Waterbury | New Haven | Wireless |
| 203-549 | Bridgeport | Fairfield | Landline |
| 203-514 | Meriden | New Haven | Landline |
| 203-537 | Meriden | New Haven | Wireless |
| 203-984 | Norwalk | Fairfield | Wireless |
| 203-704 | Wolcott | New Haven | Landline |