| Zip Code | City | Population ↓ |
|---|---|---|
| 52361 | Williamsburg | 4,784 |
| 52301 | Marengo | 4,099 |
| 52203 | Amana | 2,300 |
| 52347 | Victor | 1,367 |
| 52316 | North English | 1,298 |
| 52251 | Ladora | 551 |
| 52236 | Homestead | 512 |
| 52325 | Parnell | 460 |
| 52334 | South Amana | 259 |
| 52308 | Millersburg | 155 |
| 52220 | Conroy | 119 |
| 52307 | Middle Amana | 48 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 12 ZCTAs in Iowa County, Iowa (US Census).