15 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Council Bluffs | 1 | 62,605 | 62,784 | -0.05% | 1,457 | 43 | City |
| Carter Lake | 2 | 3,733 | 3,790 | -0.24% | 2,081 | 2 | City |
| Avoca | 3 | 1,684 | 1,686 | 0% | 707 | 2 | City |
| Oakland | 4 | 1,518 | 1,520 | 0% | 847 | 2 | City |
| Treynor | 5 | 1,140 | 1,031 | 1.6% | 1,754 | 1 | City |
| Underwood | 6 | 982 | 955 | 0.51% | 902 | 1 | City |
| Neola | 7 | 918 | 915 | 0.11% | 1,149 | 1 | City |
| Carson | 8 | 775 | 765 | 0.26% | 1,187 | 1 | City |
| Shelby | 9 | 734 | 722 | 0.27% | 355 | 2 | City |
| Walnut | 10 | 720 | 743 | -0.55% | 328 | 2 | City |
| Crescent | 11 | 625 | 627 | 0% | 646 | 1 | City |
| Minden | 12 | 571 | 601 | -0.87% | 1,007 | 1 | City |
| Macedonia | 13 | 266 | 266 | 0% | 1,127 | 0 | City |
| Hancock | 14 | 198 | 200 | 0% | 274 | 1 | City |
| McClelland | 15 | 147 | 146 | 0% | 538 | 0 | City |
Council Bluffs is the largest city in Pottawattamie County, with a population of 62,605.
McClelland is the smallest city in Pottawattamie County, with a population of 147.
There are 15 cities in Pottawattamie County, Iowa.