City | Rank | 2026 Pop.↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Albertville | 1 | 23,988 | 22,407 | 1.17% | 891 | 27 | City |
| Boaz | 2 | 10,729 | 10,115 | 1.04% | 737 | 15 | City |
| Guntersville | 3 | 9,573 | 8,585 | 1.91% | 373 | 26 | City |
| Arab | 4 | 9,193 | 8,445 | 1.46% | 690 | 13 | City |
| Grant | 5 | 1,086 | 1,041 | 0.74% | 587 | 2 | Town |
| Douglas | 6 | 804 | 758 | 1.01% | 236 | 3 | Town |
| Union Grove | 7 | 77 | 72 | 1.32% | 138 | 1 | Town |
Albertville is the largest city in Marshall County, with a population of 23,988.
Union Grove is the smallest city in Marshall County, with a population of 77.
There are 7 cities in Marshall County, Alabama.