Warren City Area Code List
| Area Codes | Country | State | City | Time Zone | Operating |
|---|---|---|---|---|---|
| 204 | Canada | Manitoba | Warren | Central | Details |
| 207 | US | Maine - ME | Warren | Eastern | Details |
| 218 | US | Minnesota - MN | Warren | Central | Details |
| 234 | US | Ohio - OH | Warren | Eastern | Details |
| 260 | US | Indiana - IN | Warren | Eastern | Details |
| 330 | US | Ohio - OH | Warren | Eastern | Details |
| 401 | US | Rhode Island – RI | Warren | Eastern | Details |
| 409 | US | Texas - TX | Warren | Central | Details |
| 431 | Canada | Manitoba | Warren | Central | Details |
| 586 | US | Michigan - MI | Warren | Eastern | Details |
| 603 | US | New Hampshire - NH | Warren | Eastern | Details |
| 705 | Canada | Ontario | Warren | Eastern | Details |
| 814 | US | Pennsylvania - PA | Warren | Eastern | Details |
| 815 | US | Illinois - IL | Warren | Central | Details |
| 870 | US | Arkansas - AR | Warren | Central | Details |