USA Area Codes
Area Code Killingworth, Area Code 860
The city of Killingworth (Middlesex county) is located in the state of Connecticut. The Killingworth area code is 860. For a local call in Killingworth you don't have to dial the area code.
If you want to call from Hartford to Killingworth you have to dial +1 860 and the telephone number of the person you want to reach.
List of Cities located close to Killingworth:
| Area | Area Code |
|---|---|
| Chester | 860 |
| Deep River | 860 |
| Essex | 860 |
| Haddam | 860 |
Last change: 23.04.2007
