| Zip Code | City | Population ↓ |
|---|---|---|
| 45503 | Springfield | 32,714 |
| 45505 | Springfield | 20,485 |
| 45502 | Springfield | 17,715 |
| 45344 | New Carlisle | 16,747 |
| 45504 | Springfield | 16,069 |
| 45506 | Springfield | 13,145 |
| 45323 | Enon | 5,170 |
| 45369 | South Vienna | 4,141 |
| 45368 | South Charleston | 4,125 |
| 45341 | Medway | 3,967 |
| 45319 | Donnelsville | 372 |
| 45372 | Tremont City | 314 |
| 43010 | Catawba | 255 |
| 45349 | North Hampton | 253 |
| 45316 | Clifton | 139 |
| 45501 | Springfield | 0 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 16 ZCTAs in Clark County, Ohio (US Census).