Butler County, Ohio Zip Codes
| Hamilton | 73,596 |
| West Chester | 55,414 |
| Middletown | 53,909 |
| Hamilton | 52,953 |
| Fairfield | 46,023 |
| Middletown | 28,812 |
| Oxford | 27,391 |
| Trenton | 15,085 |
| Monroe | 11,833 |
| Hamilton | 11,602 |
| Okeana | 3,865 |
| Somerville | 3,257 |
| Seven Mile | 756 |
| Overpeck | 179 |
- Population is the most recent figure from the U.S. Census Bureau's 2022 American Community Survey (ACS) 5-Year Estimates.