| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Georgetown | 1 | 4,440 | 4,456 | -0.22% | 1,069 | 4 | Village |
| Mount Orab | 2 | 4,429 | 4,352 | 0.25% | 457 | 10 | Village |
| Ripley | 3 | 1,600 | 1,576 | 0.19% | 804 | 2 | Village |
| Aberdeen | 4 | 1,557 | 1,517 | 0.39% | 1,153 | 1 | Village |
| Sardinia | 5 | 1,104 | 1,082 | 0.27% | 629 | 2 | Village |
| Russellville | 6 | 549 | 539 | 0.18% | 753 | 1 | Village |
| Hamersville | 7 | 504 | 495 | 0.2% | 1,151 | 0 | Village |
| Fayetteville | 8 | 318 | 316 | 0% | 674 | 0 | Village |
| Higginsport | 9 | 219 | 216 | 0% | 873 | 0 | Village |
Georgetown is the largest city in Brown County, with a population of 4,440.
Higginsport is the smallest city in Brown County, with a population of 219.
There are 9 cities in Brown County, Ohio.