6 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Albertville | 1 | 23,445 | 22,409 | 0.89% | 870 | 26.94 | City |
| Guntersville | 2 | 9,330 | 8,575 | 1.65% | 364 | 25.64 | City |
| Arab | 3 | 9,082 | 8,452 | 1.41% | 682 | 13.32 | City |
| Grant | 4 | 1,068 | 1,040 | 0.56% | 577 | 1.85 | Town |
| Douglas | 5 | 796 | 761 | 0.89% | 234 | 3.40 | Town |
| Union Grove | 6 | 71 | 70 | 0% | 128 | 0.56 | Town |
Albertville is the largest city in Marshall County, with a population of 23,445.
Union Grove is the smallest city in Marshall County.
There are 6 cities in Marshall County, Alabama.