4 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Winchester | 1 | 1,478 | 1,573 | -1.07% | 1,309 | 1 | City |
| Bluffs | 2 | 585 | 621 | -1.02% | 655 | 1 | Village |
| Manchester | 3 | 255 | 273 | -1.16% | 240 | 1 | Village |
| Alsey | 4 | 178 | 192 | -1.11% | 324 | 1 | Village |
Winchester is the largest city in Scott County, with a population of 1,478.
Alsey is the smallest city in Scott County, with a population of 178.
There are 4 cities in Scott County, Illinois.