10 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Winchester | 1 | 1,494 | 1,576 | -1.06% | 1,323 | 1 | City |
| Winchester | 2 | 1,494 | 1,573 | -1.06% | 1,323 | 1 | City |
| Manchester | 3 | 868 | 878 | 0.12% | 26 | 33 | Township |
| Manchester | 4 | 868 | 876 | 0.12% | 26 | 33 | Township |
| Bluffs | 5 | 591 | 622 | -1.01% | 662 | 1 | Village |
| Bluffs | 6 | 591 | 621 | -1.01% | 662 | 1 | Village |
| Manchester | 7 | 258 | 273 | -1.15% | 243 | 1 | Village |
| Manchester | 8 | 258 | 273 | -1.15% | 243 | 1 | Village |
| Alsey | 9 | 180 | 192 | -1.64% | 328 | 1 | Village |
| Alsey | 10 | 180 | 192 | -1.64% | 328 | 1 | Village |
Winchester is the largest city in Scott County, with a population of 1,494.
Alsey is the smallest city in Scott County, with a population of 180.
There are 10 cities in Scott County, Illinois.