11 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 45121 | Georgetown | 9,030 |
| 45154 | Mount Orab | 8,969 |
| 45171 | Sardinia | 5,752 |
| 45130 | Hamersville | 4,206 |
| 45118 | Fayetteville | 3,703 |
| 45167 | Ripley | 3,285 |
| 45101 | Aberdeen | 2,035 |
| 45168 | Russellville | 1,667 |
| 45131 | Higginsport | 278 |
| 45119 | Feesburg | 216 |
| 45115 | Decatur | 151 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 11 ZCTAs in Brown County, Ohio (US Census).