12 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 50125 | Indianola | 20,121 |
| 50211 | Norwalk | 16,835 |
| 50047 | Carlisle | 6,690 |
| 50166 | Milo | 2,023 |
| 50229 | Prole | 1,585 |
| 50210 | New Virginia | 1,487 |
| 50139 | Lacona | 1,025 |
| 50118 | Hartford | 920 |
| 50001 | Ackworth | 650 |
| 50160 | Martensdale | 569 |
| 50145 | Liberty Center | 139 |
| 50241 | Saint Marys | 96 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 12 ZCTAs in Warren County, Iowa (US Census).