| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Logansport | 1 | 18,292 | 18,341 | 0.03% | 1,743 | 10 | City |
| Galveston | 2 | 1,272 | 1,278 | -0.08% | 2,212 | 1 | Town |
| Walton | 3 | 1,030 | 964 | 0.59% | 2,407 | 0 | Town |
| Royal Center | 4 | 793 | 798 | -0.13% | 1,389 | 1 | Town |
| Onward | 5 | 76 | 76 | 0% | 738 | 0 | Town |
Logansport is the largest city in Cass County, with a population of 18,292.
Onward is the smallest city in Cass County, with a population of 76.
There are 5 cities in Cass County, Indiana.