11 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Marshall | 1 | 13,538 | 13,797 | -0.38% | 1,337 | 10.12 | City |
| Slater | 2 | 1,780 | 1,834 | -0.61% | 1,231 | 1.45 | City |
| Sweet Springs | 3 | 1,304 | 1,316 | -0.15% | 784 | 1.66 | City |
| Blackburn | 4 | 216 | 221 | -0.46% | 699 | 0.31 | City |
| Malta Bend | 5 | 184 | 191 | -0.54% | 727 | 0.25 | Town |
| Gilliam | 6 | 173 | 177 | -0.57% | 698 | 0.25 | City |
| Nelson | 7 | 147 | 151 | -0.68% | 447 | 0.33 | City |
| Miami | 8 | 145 | 149 | -0.68% | 259 | 0.56 | City |
| Mount Leonard | 9 | 62 | 64 | 0% | 596 | 0.10 | Town |
| Arrow Rock | 10 | 58 | 60 | 0% | 436 | 0.13 | Town |
| Grand Pass | 11 | 48 | 50 | 0% | 440 | 0.11 | Village |
Marshall is the largest city in Saline County, with a population of 13,538.
Grand Pass is the smallest city in Saline County.
There are 11 cities in Saline County, Missouri.