Huntsville City Area Code List
| Area Codes | Country | State | City | Time Zone | Operating |
|---|---|---|---|---|---|
| 249 | Canada | Ontario | Huntsville | Eastern | Details |
| 256 | US | Alabama - AL | Huntsville | Central | Details |
| 423 | US | Tennessee - TN | Huntsville | Eastern / Central | Details |
| 479 | US | Arkansas - AR | Huntsville | Central | Details |
| 660 | US | Missouri - MO | Huntsville | Central | Details |
| 705 | Canada | Ontario | Huntsville | Eastern | Details |
| 801 | US | Utah - UT | Huntsville | Mountain | Details |
| 936 | US | Texas - TX | Huntsville | Central | Details |
| 937 | US | Ohio - OH | Huntsville | Eastern | Details |