| Area Code | 740 |
| State | Ohio |
| Current Time in Area Code 740 | 740> EST |
| Timezone | Eastern Standard Time |
| Regional Market Area | Charleston-Huntington Area Metro Columbus Parkersburg-Wheeling-Steubenville Area |
| Metro Area(s) | Athens, OH Cambridge, OH Chillicothe, OH Coshocton, OH Huntington-Ashland, WV-KY-OH Jackson, OH Marietta, OH Marion, OH Mount Vernon, OH Portsmouth, OH Washington Court House, OH Weirton-Steubenville, WV-OH Wheeling, WV-OH Zanesville, OH |
| Population (2020) | 1678921 |
| Adjacent Area Codes | 220,234,304,326,330,380,419,567,606,614,681,937 |
| Overlay Area Codes | 220 |