Founded in May 1, 1803, Columbiana County is one of 88 counties in the state of Ohio. Historically, Columbiana County was formed from Jefferson and Washington Counties. The city of Lisbon is the county seat. With FIPS code of 29, Columbiana County has a population of 101,310 and area of 532.46 square miles (1,379 km2).
List of all cities in Columbiana County, OH alphabetically
| City/Town | Postal Code | Area Code |
| Calcutta, OH | 43920 | 330/234 |
| Clarkson, OH | 44455 | 330/234 |
| Columbiana, OH | 44408 | 330/234 |
| East Liverpool, OH | 43920 | 330/234 |
| East Palestine, OH | 44413 | 330/234 |
| East Rochester, OH | 44625 | 330/234 |
| Elkton, OH | 44415 | 330/234 |
| Hanoverton, OH | 44423 | 330/234 |
| Homeworth, OH | 44634 | 330/234 |
| Kensington, OH | 44427 | 330/234 |
| Leetonia, OH | 44431 | 330/234 |
| Lisbon, OH | 44432 | 330/234 |
| Negley, OH | 44441 | 330/234 |
| New Alexander, OH | 44625 | 330/234 |
| New Garden, OH | 44423 | 330/234 |
| New Waterford, OH | 44445 | 330/234 |
| North Georgetown, OH | 44665 | 330/234 |
| Patmos, OH | 44460 | 330/234 |
| Rogers, OH | 44455 | 330/234 |
| Salem, OH | 44460 | 330/234 |
| Salineville, OH | 43945 | 330/234 |
| Summitville, OH | 43962 | 330/234 |
| Washingtonville, OH | 44490 | 330/234 |
| Wellsville, OH | 43968 | 330/234 |
| West Point, OH | 44492 | 330/234 |
| Winona, OH | 44493 | 330/234 |