| Area Code | 203 |
| State | Connecticut |
| Current Time in Area Code 203 | 203> EDT |
| Timezone | Eastern Daylight Time |
| Regional Market Area | Hartford-New Haven Area Metro New York City |
| Metro Area(s) | Bridgeport-Stamford-Norwalk, CT New Haven-Milford, CT |
| Population (2020) | 1822254 |
| Adjacent Area Codes | 475,516,631,845,860,914,934,959 |
| Overlay Area Codes | 475 |
| Fairfield County |
| New Haven County |