| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Moundsville | 1 | 7,567 | 8,068 | -1.2% | 2,603 | 3 | City |
| McMechen | 2 | 1,585 | 1,687 | -1.25% | 2,776 | 1 | City |
| Glen Dale | 3 | 1,386 | 1,478 | -1.28% | 1,631 | 1 | City |
| Benwood | 4 | 1,180 | 1,268 | -1.34% | 909 | 1 | City |
| Cameron | 5 | 807 | 864 | -1.34% | 939 | 1 | City |
Moundsville is the largest city in Marshall County, with a population of 7,567.
Cameron is the smallest city in Marshall County, with a population of 807.
There are 5 cities in Marshall County, West Virginia.