16 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Council Bluffs | 1 | 62,138 | 62,790 | -0.21% | 1,446 | 42.96 | City |
| Carter Lake | 2 | 3,738 | 3,790 | -0.27% | 2,084 | 1.79 | City |
| Avoca | 3 | 1,672 | 1,687 | -0.18% | 702 | 2.38 | City |
| Oakland | 4 | 1,515 | 1,522 | -0.07% | 845 | 1.79 | City |
| Treynor | 5 | 1,136 | 1,033 | 1.88% | 1,748 | 0.65 | City |
| Underwood | 6 | 961 | 955 | 0.1% | 882 | 1.09 | City |
| Neola | 7 | 900 | 914 | -0.33% | 1,126 | 0.80 | City |
| Carson | 8 | 764 | 768 | -0.13% | 1,170 | 0.65 | City |
| Shelby | 9 | 732 | 722 | 0.27% | 354 | 2.06 | City |
| Walnut | 10 | 714 | 741 | -0.69% | 325 | 2.20 | City |
| Crescent | 11 | 622 | 626 | -0.16% | 643 | 0.97 | City |
| Minden | 12 | 583 | 602 | -0.68% | 1,028 | 0.57 | City |
| Macedonia | 13 | 260 | 267 | -0.38% | 1,102 | 0.24 | City |
| Hancock | 14 | 197 | 199 | 0% | 272 | 0.72 | City |
| McClelland | 15 | 143 | 147 | -0.69% | 524 | 0.27 | City |
| Weston | 16 | 114 | 138 | 7.55% | 267 | 0.43 | CDP |
Council Bluffs is the largest city in Pottawattamie County, with a population of 62,138.
Weston is the smallest city in Pottawattamie County.
There are 16 cities in Pottawattamie County, Iowa.