15 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Davenport | 1 | 100,759 | 101,651 | -0.18% | 1,569 | 64 | City |
| Bettendorf | 2 | 40,568 | 39,130 | 0.71% | 1,904 | 21 | City |
| Eldridge | 3 | 7,026 | 6,731 | 0.85% | 720 | 10 | City |
| Le Claire | 4 | 4,792 | 4,710 | 0.34% | 1,030 | 5 | City |
| Blue Grass | 5 | 1,717 | 1,666 | 0.59% | 543 | 3 | City |
| Walcott | 6 | 1,556 | 1,556 | 0% | 500 | 3 | City |
| Buffalo | 7 | 1,159 | 1,176 | -0.34% | 171 | 7 | City |
| Princeton | 8 | 915 | 924 | -0.22% | 281 | 3 | City |
| Long Grove | 9 | 852 | 837 | 0.35% | 740 | 1 | City |
| Riverdale | 10 | 386 | 380 | 0.26% | 210 | 2 | City |
| Donahue | 11 | 337 | 332 | 0.3% | 949 | 0 | City |
| McCausland | 12 | 315 | 310 | 0.32% | 569 | 1 | City |
| Dixon | 13 | 204 | 203 | 0% | 1,632 | 0 | City |
| Panorama Park | 14 | 142 | 141 | 0% | 2,367 | 0 | City |
| New Liberty | 15 | 141 | 138 | 0% | 1,484 | 0 | City |
Davenport is the largest city in Scott County, with a population of 100,759.
New Liberty is the smallest city in Scott County, with a population of 141.
There are 15 cities in Scott County, Iowa.