8 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 52172 | Waukon | 5,986 |
| 52162 | Postville | 3,576 |
| 52159 | Monona | 2,488 |
| 52151 | Lansing | 1,956 |
| 52160 | New Albin | 930 |
| 52146 | Harpers Ferry | 815 |
| 52170 | Waterville | 527 |
| 52140 | Dorchester | 469 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 8 ZCTAs in Allamakee County, Iowa (US Census).