Columbia City Area Code List
| Area Codes | Country | State | City | Time Zone | Operating |
|---|---|---|---|---|---|
| 207 | US | Maine - ME | Columbia | Eastern | Details |
| 240 | US | Maryland - MD | Columbia | Eastern | Details |
| 252 | US | North Carolina - NC | Columbia | Eastern | Details |
| 270 | US | Kentucky - KY | Columbia | Eastern / Central | Details |
| 301 | US | Maryland - MD | Columbia | Eastern | Details |
| 318 | US | Louisiana - LA | Columbia | Central | Details |
| 334 | US | Alabama - AL | Columbia | Central | Details |
| 410 | US | Maryland - MD | Columbia | Eastern | Details |
| 443 | US | Maryland - MD | Columbia | Eastern | Details |
| 573 | US | Missouri - MO | Columbia | Central | Details |
| 601 | US | Mississippi - MS | Columbia | Central | Details |
| 605 | US | South Dakota - SD | Columbia | Central / Mountain | Details |
| 618 | US | Illinois - IL | Columbia | Central | Details |
| 641 | US | Iowa - IA | Columbia | Central | Details |
| 717 | US | Pennsylvania - PA | Columbia | Eastern | Details |
| 803 | US | South Carolina - SC | Columbia | Eastern | Details |
| 804 | US | Virginia - VA | Columbia | Eastern | Details |
| 860 | US | Connecticut - CT | Columbia | Eastern | Details |
| 908 | US | New Jersey - NJ | Columbia | Eastern | Details |
| 931 | US | Tennessee - TN | Columbia | Eastern / Central | Details |