Hartford City Area Code List
| Area Codes | Country | State | City | Time Zone | Operating |
|---|---|---|---|---|---|
| 262 | US | Wisconsin - WI | Hartford | Central | Details |
| 269 | US | Michigan - MI | Hartford | Eastern | Details |
| 270 | US | Kentucky - KY | Hartford | Eastern / Central | Details |
| 334 | US | Alabama - AL | Hartford | Central | Details |
| 423 | US | Tennessee - TN | Hartford | Eastern / Central | Details |
| 518 | US | New York - NY | Hartford | Eastern | Details |
| 605 | US | South Dakota - SD | Hartford | Central / Mountain | Details |
| 620 | US | Kansas - KS | Hartford | Central / Mountain | Details |
| 828 | US | North Carolina - NC | Hartford | Eastern | Details |
| 860 | US | Connecticut - CT | Hartford | Eastern | Details |
| 865 | US | Tennessee - TN | Hartford | Eastern | Details |