4 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Benton | 1 | 4,765 | 4,765 | 0% | 937 | 5.08 | City |
| Calvert City | 2 | 2,517 | 2,517 | 0% | 141 | 17.87 | City |
| Hardin | 3 | 585 | 582 | 0.17% | 835 | 0.70 | City |
| Gilbertsville | 4 | 192 | 341 | -8.57% | 189 | 1.02 | CDP |
Benton is the largest city in Marshall County, with a population of 4,765.
Gilbertsville is the smallest city in Marshall County.
There are 4 cities in Marshall County, Kentucky.