11 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Mobile | 1 | 198,806 | 206,488 | -0.64% | 1,318 | 151 | City |
| Prichard | 2 | 18,531 | 19,272 | -0.66% | 732 | 25 | City |
| Saraland | 3 | 16,567 | 16,239 | 0.33% | 480 | 35 | City |
| Satsuma | 4 | 6,932 | 6,757 | 0.42% | 943 | 7 | City |
| Semmes | 5 | 6,719 | 5,141 | 4.07% | 426 | 16 | City |
| Chickasaw | 6 | 6,134 | 6,455 | -0.86% | 1,458 | 4 | City |
| Citronelle | 7 | 3,927 | 3,930 | 0% | 152 | 26 | City |
| Bayou La Batre | 8 | 2,097 | 2,178 | -0.62% | 280 | 7 | City |
| Dauphin Island | 9 | 1,993 | 1,783 | 1.79% | 319 | 6 | Town |
| Creola | 10 | 1,991 | 1,934 | 0.5% | 127 | 16 | City |
| Mount Vernon | 11 | 1,376 | 1,346 | 0.36% | 251 | 5 | Town |
Mobile is the largest city in Mobile County, with a population of 198,806.
Mount Vernon is the smallest city in Mobile County, with a population of 1,376.
There are 11 cities in Mobile County, Alabama.