13 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Carroll | 1 | 10,071 | 10,300 | -0.45% | 1,688 | 5.96 | City |
| Manning | 2 | 1,392 | 1,451 | -0.85% | 562 | 2.48 | City |
| Coon Rapids | 3 | 1,244 | 1,303 | -0.96% | 698 | 1.78 | City |
| Glidden | 4 | 1,148 | 1,152 | -0.09% | 1,031 | 1.11 | City |
| Arcadia | 5 | 610 | 529 | 2.69% | 617 | 0.99 | City |
| Breda | 6 | 492 | 497 | -0.2% | 666 | 0.74 | City |
| Templeton | 7 | 335 | 349 | -0.89% | 684 | 0.49 | City |
| Halbur | 8 | 264 | 273 | -0.75% | 1,245 | 0.21 | City |
| Dedham | 9 | 219 | 223 | -0.45% | 397 | 0.55 | City |
| Lidderdale | 10 | 161 | 166 | -0.62% | 67 | 2.41 | City |
| Lanesboro | 11 | 111 | 118 | -0.89% | 149 | 0.74 | City |
| Ralston | 12 | 75 | 79 | -1.32% | 38 | 1.97 | City |
| Willey | 13 | 70 | 72 | 0% | 281 | 0.25 | City |
Carroll is the largest city in Carroll County, with a population of 10,071.
Willey is the smallest city in Carroll County.
There are 13 cities in Carroll County, Iowa.