| District of Ohio area codes: 740 | |
|---|---|
| Country | United States |
| State/Province | Ohio |
| Major City | Columbus |
| Time Zone | Eastern (UTC-05:00) |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 740-363 | Delaware | Delaware, OH | Frontier North |
| 740-364 | Licking | Newark, OH | Windstream Ohio |
| 740-365 | Tuscarawas | Newcomerstown, OH | Level 3 Communications |
| 740-366 | Licking | Newark, OH | Windstream Ohio |
| 740-367 | Gallia | Cheshire, OH | Ameritech Ohio |
| 740-368 | Delaware | Delaware, OH | Frontier North |
| 740-369 | Delaware | Delaware, OH | Frontier North |
| 740-370 | Scioto | Portsmouth, OH | Level 3 Communications |
| 740-371 | Washington | Marietta, OH | Cebridge Telecom Oh DBA Suddenlink Comm |
| 740-372 | Scioto | Otway, OH | Frontier North |
| 740-373 | Washington | Marietta, OH | Ameritech Ohio |
| 740-374 | Washington | Marietta, OH | Ameritech Ohio |
| 740-375 | Marion | Marion, OH | Frontier North |
| 740-376 | Washington | Marietta, OH | Ameritech Ohio |
| 740-377 | Lawrence | South Point, OH | Ameritech Ohio |
| 740-378 | Athens | Coolville, OH | Windstream Western Reserve |
| 740-379 | Gallia | Patriot, OH | Ameritech Ohio |
| 740-380 | Hocking | Logan, OH | Frontier North |
| 740-381 | Jefferson | Steubenville, OH | Cellco Partnership DBA Verizon Wireless |
| 740-382 | Marion | Marion, OH | Frontier North |
There are 737 prefixes, In the code area, the major cities are Athens, OH;Chillicothe, OH;Delaware, OH;Lancaster,. The major city is Columbus.