6 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Albertville | 1 | 23,878 | 22,420 | 1.03% | 886 | 27 | City |
| Guntersville | 2 | 9,568 | 8,589 | 1.73% | 373 | 26 | City |
| Arab | 3 | 9,155 | 8,444 | 1.32% | 687 | 13 | City |
| Grant | 4 | 1,074 | 1,038 | 0.56% | 580 | 2 | Town |
| Douglas | 5 | 803 | 758 | 1.01% | 236 | 3 | Town |
| Union Grove | 6 | 78 | 72 | 1.3% | 140 | 1 | Town |
Albertville is the largest city in Marshall County, with a population of 23,878.
Union Grove is the smallest city in Marshall County, with a population of 78.
There are 6 cities in Marshall County, Alabama.