11 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 45373 | Troy | 37,565 |
| 45356 | Piqua | 25,237 |
| 45371 | Tipp City | 22,865 |
| 45383 | West Milton | 6,912 |
| 45318 | Covington | 5,511 |
| 45359 | Pleasant Hill | 2,160 |
| 45337 | Laura | 1,703 |
| 45326 | Fletcher | 1,446 |
| 45312 | Casstown | 1,086 |
| 45339 | Ludlow Falls | 1,057 |
| 45361 | Potsdam | 253 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 11 ZCTAs in Miami County, Ohio (US Census).