| 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 |
|---|---|---|---|
| 203-524 | Stamford | Fairfield | Wireless |
| 203-502 | Bridgeport | Fairfield | Landline |
| 203-476 | - | - | - |
| 203-773 | New Haven | New Haven | Landline |
| 203-673 | Bridgeport | Fairfield | Landline |
| 203-922 | Shelton | Fairfield | Landline |
| 203-492 | New Haven | New Haven | Landline |
| 203-283 | Milford | New Haven | Landline |
| 203-330 | Bridgeport | Fairfield | Landline |
| 203-344 | Old Greenwich | Fairfield | Landline |
| 203-519 | Waterbury | New Haven | Wireless |
| 203-310 | New Canaan | Fairfield | Landline |
| 203-274 | Stamford | Fairfield | Wireless |
| 203-608 | Meriden | New Haven | Landline |
| 203-231 | Ansonia | New Haven | Wireless |
| 203-894 | Ridgefield | Fairfield | Landline |
| 203-951 | Milford | New Haven | Landline |
| 203-833 | New Haven | New Haven | Wireless |
| 203-749 | Danbury | Fairfield | Landline |
| 203-997 | Ansonia | New Haven | Wireless |