Founded in 1835, Marshall County is one of 55 counties in the state of West Virginia. Historically, Marshall County was formed from Ohio County. The city of Moundsville is the county seat. With FIPS code of 51, Marshall County has a population of 30,115 and area of 307 square miles (795 km2).
List of all cities in Marshall County, WV alphabetically
| City/Town | Postal Code | Area Code |
| Benwood, WV | 26031 | 304 |
| Cameron, WV | 26033 | 304 |
| Dallas, WV | 26036 | 304 |
| Glen Dale, WV | 26038 | 304 |
| Glen Easton, WV | 26039 | 304 |
| McMechen, WV | 26040 | 304 |
| Moundsville, WV | 26041 | 304 |
| Proctor, WV | 26055 | 304 |