| Postal Service | Guttenberg |
| Division | Clayton |
| Post code | 52052 |
| Postal Service | Monona |
| Division | Clayton |
| Post code | 52159 |
| Postal Service | Elkader |
| Division | Clayton |
| Post code | 52043 |
| Postal Service | Strawberry Point |
| Division | Clayton |
| Post code | 52076 |
| Postal Service | Mc Gregor |
| Division | Clayton |
| Post code | 52157 |
| Postal Service | Edgewood |
| Division | Clayton |
| Post code | 52042 |
| Postal Service | Garnavillo |
| Division | Clayton |
| Post code | 52049 |
| Postal Service | Colesburg |
| Division | Clayton |
| Post code | 52035 |
| Postal Service | Farmersburg |
| Division | Clayton |
| Post code | 52047 |
| Postal Service | Luana |
| Division | Clayton |
| Post code | 52156 |
16 City in Clayton | List of Zip Codes Location In Iowa and Your selected County Clayton