8 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 52172 | Waukon | 5,877 |
| 52162 | Postville | 3,744 |
| 52159 | Monona | 2,398 |
| 52151 | Lansing | 1,886 |
| 52160 | New Albin | 818 |
| 52146 | Harpers Ferry | 752 |
| 52140 | Dorchester | 671 |
| 52170 | Waterville | 555 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 8 ZCTAs in Allamakee County, Iowa (US Census).