622505 is the PIN Code of Oonaiyur, which is located in Pudukkottai district, Tamil Nadu state.
Oonaiyur Post Office is located at Oonaiyur, Pudukkottai of TAMIL NADU state. It is a Branch Post Office. A Post Office (PO) / Dak Ghar is a facility in charge of sorting, processing, and delivering mail to recipients. POs are usually regulated and funded by the Government of India (GOI). Pin code of Oonaiyur PO is 622505. This Postoffice falls under Pudukkottai postal division of the Tamilnadu postal circle.