| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Winchester | 1 | 1,486 | 1,570 | -1.07% | 1,316 | 1 | City |
| Bluffs | 2 | 586 | 619 | -1.01% | 656 | 1 | Village |
| Manchester | 3 | 258 | 274 | -1.15% | 243 | 1 | Village |
| Alsey | 4 | 183 | 192 | -1.08% | 333 | 1 | Village |
Winchester is the largest city in Scott County, with a population of 1,486.
Alsey is the smallest city in Scott County, with a population of 183.
There are 4 cities in Scott County, Illinois.