5 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Logansport | 1 | 18,079 | 18,345 | -0.24% | 1,723 | 10 | City |
| Galveston | 2 | 1,270 | 1,284 | -0.16% | 2,209 | 1 | Town |
| Walton | 3 | 989 | 962 | 0.51% | 2,311 | 0 | Town |
| Royal Center | 4 | 790 | 799 | -0.13% | 1,384 | 1 | Town |
| Onward | 5 | 75 | 77 | 0% | 728 | 0 | Town |
Logansport is the largest city in Cass County, with a population of 18,079.
Onward is the smallest city in Cass County, with a population of 75.
There are 5 cities in Cass County, Indiana.