| 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 |
|---|---|---|---|
| 740-323 | Licking | Newark, OH | Windstream Ohio |
| 740-324 | Knox | Mount Vernon, OH | Aerial Communications |
| 740-325 | Belmont | Bellaire, OH | Sprint Spectrum L.p. |
| 740-326 | Knox | Mount Vernon, OH | Level 3 Communications |
| 740-327 | Muskingum | Frazeysburg, OH | Frontier North |
| 740-328 | Licking | Newark, OH | Windstream Ohio |
| 740-329 | Fairfield | Carroll, OH | Teleport Communications America |
| 740-330 | Belmont | Bethesda, OH | Long Distance Of Michigan DBA Ldmi |
| 740-331 | Athens | Athens, OH | Level 3 Communications |
| 740-332 | Hocking | Laurelville, OH | Frontier North |
| 740-333 | Fayette | Washington Court House, OH | Ameritech Ohio |
| 740-334 | Licking | Newark, OH | Level 3 Communications |
| 740-335 | Fayette | Washington Court House, OH | Ameritech Ohio |
| 740-336 | Washington | Marietta, OH | Cellco Partnership DBA Verizon Wireless |
| 740-337 | Jefferson | Toronto, OH | First Communications LLC DBA Corecomm |
| 740-338 | Belmont | Saint Clairsville, OH | Teleport Communications America |
| 740-339 | Gallia | Gallipolis, OH | Ameritech Ohio |
| 740-340 | Belmont | Bellaire, OH | First Communications LLC DBA Corecomm |
| 740-341 | Marion | Marion, OH | New Cingular Wireless PCS - IL |
| 740-342 | Perry | New Lexington, OH | Ameritech Ohio |
There are 737 prefixes, In the code area, the major cities are Athens, OH;Chillicothe, OH;Delaware, OH;Lancaster,. The major city is Columbus.