17 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Davenport | 1 | 99,489 | 101,651 | -0.43% | 1,556 | 63.92 | City |
| Bettendorf | 2 | 40,346 | 39,125 | 0.61% | 1,894 | 21.30 | City |
| Eldridge | 3 | 6,925 | 6,727 | 0.58% | 710 | 9.76 | City |
| Le Claire | 4 | 4,765 | 4,712 | 0.23% | 1,024 | 4.65 | City |
| Park View | 5 | 2,946 | 3,444 | 1.27% | 1,996 | 1.48 | CDP |
| Blue Grass | 6 | 1,700 | 1,665 | 0.41% | 538 | 3.16 | City |
| Walcott | 7 | 1,544 | 1,556 | -0.13% | 496 | 3.11 | City |
| Buffalo | 8 | 1,154 | 1,179 | -0.43% | 170 | 6.77 | City |
| Princeton | 9 | 910 | 925 | -0.33% | 279 | 3.26 | City |
| Long Grove | 10 | 848 | 838 | 0.24% | 737 | 1.15 | City |
| Riverdale | 11 | 377 | 376 | 0% | 205 | 1.84 | City |
| Donahue | 12 | 338 | 333 | 0.3% | 952 | 0.35 | City |
| McCausland | 13 | 311 | 310 | 0% | 561 | 0.55 | City |
| Dixon | 14 | 204 | 203 | 0% | 1,632 | 0.13 | City |
| Panorama Park | 15 | 141 | 141 | 0% | 2,350 | 0.06 | City |
| New Liberty | 16 | 133 | 133 | 0% | 1,400 | 0.10 | City |
| Big Rock | 17 | 15 | 34 | 7.14% | 45 | 0.33 | CDP |
Davenport is the largest city in Scott County, with a population of 99,489.
Big Rock is the smallest city in Scott County.
There are 17 cities in Scott County, Iowa.