Danbury City Area Code List
| Area Codes | Country | State | City | Time Zone | Operating |
|---|---|---|---|---|---|
| 203 | US | Connecticut - CT | Danbury | Eastern | Details |
| 308 | US | Nebraska - NE | Danbury | Central / Mountain | Details |
| 336 | US | North Carolina - NC | Danbury | Eastern | Details |
| 475 | US | Connecticut - CT | Danbury | Eastern | Details |
| 712 | US | Iowa - IA | Danbury | Central | Details |
| 715 | US | Wisconsin - WI | Danbury | Central | Details |