Franklin City Area Code List
| Area Codes | Country | State | City | Time Zone | Operating |
|---|---|---|---|---|---|
| 208 | US | Idaho - ID | Franklin | Mountain / Pacific | Details |
| 251 | US | Alabama - AL | Franklin | Central | Details |
| 270 | US | Kentucky - KY | Franklin | Eastern / Central | Details |
| 304 | US | West Virginia - VA | Franklin | Eastern | Details |
| 308 | US | Nebraska - NE | Franklin | Central / Mountain | Details |
| 317 | US | Indiana - IN | Franklin | Eastern | Details |
| 337 | US | Louisiana - LA | Franklin | Central | Details |
| 507 | US | Minnesota - MN | Franklin | Central | Details |
| 508 | US | Massachusetts - MA | Franklin | Eastern | Details |
| 603 | US | New Hampshire - NH | Franklin | Eastern | Details |
| 607 | US | New York - NY | Franklin | Eastern | Details |
| 615 | US | Tennessee - TN | Franklin | Central | Details |
| 706 | US | Georgia - GA | Franklin | Eastern | Details |
| 757 | US | Virginia - VA | Franklin | Eastern | Details |
| 774 | US | Massachusetts - MA | Franklin | Eastern | Details |
| 814 | US | Pennsylvania - PA | Franklin | Eastern | Details |
| 828 | US | North Carolina - NC | Franklin | Eastern | Details |
| 870 | US | Arkansas - AR | Franklin | Central | Details |
| 937 | US | Ohio - OH | Franklin | Eastern | Details |
| 978 | US | Massachusetts - MA | Franklin | Eastern | Details |
| 979 | US | Texas - TX | Franklin | Central | Details |