7 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Harrisburg | 1 | 7,779 | 8,253 | -1.01% | 1,176 | 7 | City |
| Eldorado | 2 | 3,508 | 3,732 | -1.04% | 1,402 | 3 | City |
| Carrier Mills | 3 | 1,569 | 1,662 | -0.95% | 1,299 | 1 | Village |
| Galatia | 4 | 770 | 821 | -1.03% | 394 | 2 | Village |
| Raleigh | 5 | 273 | 288 | -0.73% | 138 | 2 | Village |
| Stonefort | 6 | 217 | 223 | -0.46% | 149 | 1 | Village |
| Muddy | 7 | 56 | 59 | 0% | 185 | 0 | Village |
Harrisburg is the largest city in Saline County, with a population of 7,779.
Muddy is the smallest city in Saline County, with a population of 56.
There are 7 cities in Saline County, Illinois.