The Pin Code of Oonaiyur is 622505. Get more details along with the Pin Code of Oonaiyur. Oonaiyur is located in Pudukkottai district in Tamil Nadu. 622505 is the pincode (Postal code) of Oonaiyur.
| Location | Pincode | State | District |
| Oonaiyur | 622505 | Tamil Nadu | Pudukkottai |
| Location | Pincode | State | District |
| Hirudayapuram | 622505 | Tamil Nadu | Pudukkottai |
| Panangudi | 622505 | Tamil Nadu | Pudukkottai |
| Ramachandrapuram | 622505 | Tamil Nadu | Pudukkottai |