11 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 45154 | Mount Orab | 9,094 |
| 45121 | Georgetown | 8,931 |
| 45171 | Sardinia | 5,770 |
| 45130 | Hamersville | 3,806 |
| 45118 | Fayetteville | 3,789 |
| 45167 | Ripley | 3,379 |
| 45101 | Aberdeen | 1,876 |
| 45168 | Russellville | 1,399 |
| 45131 | Higginsport | 374 |
| 45119 | Feesburg | 217 |
| 45115 | Decatur | 130 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 11 ZCTAs in Brown County, Ohio (US Census).