| Locality | Post Code |
|---|---|
| Bethany, Butler | 45042 |
| City View Heights, Butler | 45011 |
| College Corner, Butler | 45003 |
| Collinsville, Butler | 45004 |
| Darrtown, Butler | 45056 |
| Fairfield, Butler | 45011, 45013, 45014, 45015 |
| Hamilton, Butler | 45011, 45013, 45015 |
| Liberty Township, Butler | 45011, 45044, 45069 |
| Lindenwald, Butler | 45015 |
| Miami, Butler | 45056 |
| Middletown, Butler | 45042, 45044 |
| Millville, Butler | 45013 |
| Monroe, Butler | 45044, 45050 |
| New Miami, Butler | 45011 |
| Okeana, Butler | 45053 |
| Overpeck, Butler | 45055 |
| Oxford, Butler | 45056 |
| Pisgah, Butler | 45069 |
| Princeton, Butler | 45015 |
| Reily, Butler | 45056 |
| Ross, Butler | 45061 |
| Rossville, Butler | 45013 |
| Saint Clair, Butler | 45011 |
| Seven Mile, Butler | 45062 |
| Shandon, Butler | 45063 |
| Somerville, Butler | 45064 |