635109 is the PIN Code of Onnalvadi, which is located in Krishnagiri district, Tamil Nadu state.
Onnalvadi Post Office is located at Onnalvadi, Krishnagiri 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 Onnalvadi PO is 635109. This Postoffice falls under Krishnagiri postal division of the Tamilnadu postal circle.