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