| Locality | Post Code |
|---|---|
| Armstrong, Howard | 65230 |
| Boonesboro, Howard | 65250 |
| Estill, Howard | 65274 |
| Fayette, Howard | 65248 |
| Franklin, Howard | 65250 |
| Glasgow, Howard | 65254 |
| Harrisburg, Howard | 65256 |
| Higbee, Howard | 65257 |
| New Franklin, Howard | 65274 |
| Petersburg, Howard | 65250 |
| Roanoke, Howard | 65230 |
| Rocheport, Howard | 65279 |