| 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 |
|---|---|---|---|
| 203-905 | Stamford | Fairfield | Landline |
| 203-364 | Newtown | Fairfield | Landline |
| 203-886 | Meriden | New Haven | Landline |
| 203-420 | Meriden | New Haven | Landline |
| 203-801 | New Canaan | Fairfield | Landline |
| 203-988 | New Haven | New Haven | Wireless |
| 203-382 | Bridgeport | Fairfield | Landline |
| 203-263 | Woodbury | Litchfield | Landline |
| 203-964 | Stamford | Fairfield | Landline |
| 203-838 | Norwalk | Fairfield | Landline |
| 203-512 | Danbury | Fairfield | Wireless |
| 203-978 | Stamford | Fairfield | Landline |
| 203-682 | Stamford | Fairfield | Landline |
| 203-722 | Norwalk | Fairfield | Wireless |
| 203-243 | Bridgeport | Fairfield | Wireless |
| 203-934 | New Haven | New Haven | Landline |
| 203-389 | New Haven | New Haven | Landline |
| 203-735 | Ansonia | New Haven | Landline |
| 203-939 | Norwalk | Fairfield | Landline |
| 203-491 | Newtown | Fairfield | Landline |