16 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 45503 | Springfield | 32,638 |
| 45505 | Springfield | 19,826 |
| 45502 | Springfield | 17,692 |
| 45344 | New Carlisle | 16,979 |
| 45504 | Springfield | 16,363 |
| 45506 | Springfield | 13,435 |
| 45323 | Enon | 4,961 |
| 45369 | South Vienna | 4,120 |
| 45368 | South Charleston | 3,889 |
| 45341 | Medway | 3,639 |
| 45319 | Donnelsville | 308 |
| 43010 | Catawba | 305 |
| 45372 | Tremont City | 265 |
| 45349 | North Hampton | 234 |
| 45316 | Clifton | 141 |
| 45501 | Springfield | 0 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 16 ZCTAs in Clark County, Ohio (US Census).