| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Doctors Inlet, Clay | 32030 |
| Postal/ZIP Codes in Fleming Island, Clay | 32003 |
| Postal/ZIP Codes in Green Cove Springs, Clay | 32043 |
| Postal/ZIP Codes in Keystone Heights, Clay | 32656 |
| Postal/ZIP Codes in Lake Geneva, Clay | 32160 |
| Postal/ZIP Codes in Middleburg, Clay | 32068 |
| Postal/ZIP Codes in Orange Park, Clay | 32065, 32073 |
| Postal/ZIP Codes in Penney Farms, Clay | 32079 |