6 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Hamblen | 1 | 4,492 | 4,451 | -0.24% | 70 | 64 | Township |
| Jackson | 2 | 3,992 | 3,959 | -0.25% | 65 | 62 | Township |
| Smithville-Sanders | 3 | 3,078 | 3,411 | -0.23% | 287 | 11 | CDP |
| Cordry Sweetwater Lakes | 4 | 1,378 | 1,323 | 1.25% | 517 | 3 | CDP |
| Prince's Lakes | 5 | 1,372 | 1,372 | 0% | 1,026 | 1 | Town |
| Nashville | 6 | 1,266 | 1,255 | 0.16% | 790 | 2 | Town |
Hamblen is the largest city in Brown County, with a population of 4,492.
Nashville is the smallest city in Brown County, with a population of 1,266.
There are 6 cities in Brown County, Indiana.