31 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Mobile | 1 | 200,086 | 206,932 | -0.64% | 1,434 | 139 | City |
| Mobile | 2 | 200,086 | 206,488 | -0.64% | 1,434 | 139 | City |
| Prichard | 3 | 18,654 | 19,346 | -0.66% | 737 | 25 | City |
| Prichard | 4 | 18,654 | 19,272 | -0.66% | 737 | 25 | City |
| Tillmans Corner | 5 | 18,173 | 17,419 | 0.29% | 1,399 | 13 | CDP |
| Saraland | 6 | 16,512 | 16,240 | 0.33% | 478 | 35 | City |
| Saraland | 7 | 16,512 | 16,239 | 0.33% | 478 | 35 | City |
| Satsuma | 8 | 6,903 | 6,750 | 0.42% | 939 | 7 | City |
| Satsuma | 9 | 6,903 | 6,757 | 0.42% | 939 | 7 | City |
| Semmes | 10 | 6,456 | 5,109 | 4.25% | 429 | 15 | City |
| Semmes | 11 | 6,456 | 5,141 | 4.25% | 429 | 15 | City |
| Chickasaw | 12 | 6,187 | 6,470 | -0.87% | 1,471 | 4 | City |
| Chickasaw | 13 | 6,187 | 6,455 | -0.87% | 1,471 | 4 | City |
| Theodore | 14 | 4,871 | 6,039 | -1.7% | 610 | 8 | CDP |
| Citronelle | 15 | 3,927 | 3,935 | -0.03% | 152 | 26 | City |
| Citronelle | 16 | 3,927 | 3,930 | -0.03% | 152 | 26 | City |
| Grand Bay | 17 | 3,591 | 3,829 | -0.14% | 414 | 9 | CDP |
| Bayou La Batre | 18 | 2,110 | 2,181 | -0.66% | 282 | 7 | City |
| Bayou La Batre | 19 | 2,110 | 2,178 | -0.66% | 282 | 7 | City |
| Creola | 20 | 1,981 | 1,936 | 0.46% | 126 | 16 | City |
| Creola | 21 | 1,981 | 1,934 | 0.46% | 126 | 16 | City |
| Dauphin Island | 22 | 1,958 | 1,773 | 1.82% | 313 | 6 | Town |
| Dauphin Island | 23 | 1,958 | 1,783 | 1.82% | 313 | 6 | Town |
| Mount Vernon | 24 | 1,371 | 1,343 | 0.37% | 250 | 5 | Town |
| Mount Vernon | 25 | 1,371 | 1,346 | 0.37% | 250 | 5 | Town |
| Belle Fontaine | 26 | 722 | 498 | 1.12% | 465 | 2 | CDP |
| Fairford | 27 | 187 | 202 | 0% | 61 | 3 | CDP |
| Axis | 28 | 147 | 269 | -21.81% | 42 | 3 | CDP |
| Chunchula | 29 | 137 | 312 | -3.52% | 76 | 2 | CDP |
| Gulfcrest | 30 | 32 | 181 | -21.95% | 21 | 2 | CDP |
| Bucks | 31 | 25 | 12 | 8.7% | 65 | 0 | CDP |
Mobile is the largest city in Mobile County, with a population of 200,086.
Bucks is the smallest city in Mobile County, with a population of 25.
There are 31 cities in Mobile County, Alabama.