20 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Mobile | 1 | 179,911 | 186,621 | -0.74% | 1,290 | 139.48 | City |
| Prichard | 2 | 18,524 | 19,254 | -0.78% | 732 | 25.31 | City |
| Tillmans Corner | 3 | 18,173 | 17,419 | 0.29% | 1,399 | 12.99 | CDP |
| Saraland | 4 | 16,574 | 16,226 | 0.42% | 480 | 34.54 | City |
| Satsuma | 5 | 6,910 | 6,757 | 0.45% | 940 | 7.35 | City |
| Semmes | 6 | 6,322 | 5,132 | 3.91% | 420 | 15.05 | City |
| Chickasaw | 7 | 6,167 | 6,456 | -0.93% | 1,466 | 4.21 | City |
| Theodore | 8 | 4,871 | 6,039 | -1.7% | 610 | 7.98 | CDP |
| Citronelle | 9 | 3,893 | 3,935 | -0.21% | 150 | 25.88 | City |
| Grand Bay | 10 | 3,591 | 3,829 | -0.14% | 414 | 8.68 | CDP |
| Bayou La Batre | 11 | 2,129 | 2,194 | -0.61% | 284 | 7.49 | City |
| Creola | 12 | 1,987 | 1,937 | 0.51% | 127 | 15.68 | City |
| Dauphin Island | 13 | 1,967 | 1,787 | 1.86% | 314 | 6.26 | Town |
| Mount Vernon | 14 | 1,390 | 1,355 | 0.51% | 254 | 5.48 | Town |
| Belle Fontaine | 15 | 722 | 498 | 1.12% | 465 | 1.55 | CDP |
| Fairford | 16 | 187 | 202 | 0% | 61 | 3.07 | CDP |
| Axis | 17 | 147 | 269 | -21.81% | 42 | 3.50 | CDP |
| Chunchula | 18 | 137 | 312 | -3.52% | 76 | 1.80 | CDP |
| Gulfcrest | 19 | 32 | 181 | -21.95% | 21 | 1.51 | CDP |
| Bucks | 20 | 25 | 12 | 8.7% | 65 | 0.39 | CDP |
Mobile is the largest city in Mobile County, with a population of 179,911.
Bucks is the smallest city in Mobile County.
There are 20 cities in Mobile County, Alabama.