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Connecticut Area Codes
Connecticut has 4 area codes in service: 203, 475, 860 and 959.
Largest cities
| City | Area codes |
|---|---|
| Bridgeport | 203, 475 |
| Stamford | 203, 475 |
| New Haven | 203, 475 |
| Hartford | 860, 959 |
| Waterbury | 203, 475 |
| Norwalk | 203, 475 |
| Danbury | 203, 475 |
| New Britain | 860, 959 |
| West Hartford | 860, 959 |
| Bristol | 860, 959 |
| Meriden | 203, 475 |
| West Haven | 203, 475 |
All area codes in Connecticut
| Code | Main cities | Overlay | In service since | Projected exhaust |
|---|---|---|---|---|
| 203 | Bridgeport, Stamford, New Haven, Waterbury | 475 | 1947 | 2055 |
| 475 | Bridgeport, Stamford, New Haven, Waterbury | 203 | 2009 | 2055 |
| 860 | Hartford, New Britain, West Hartford, Bristol | 959 | 1995 | 2091 |
| 959 | Hartford, New Britain, West Hartford, Bristol | 860 | 2014 | 2091 |
2,015 prefixes are in use across Connecticut. Exhaust years are NANPA's 2026 forecast.