690538 is the PIN Code of Arinallur South, which is located in Kollam district, Kerala state.
Arinallur South Post Office is located at Arinallur South, Kollam of KERALA 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 Arinallur South PO is 690538. This Postoffice falls under Quilon postal division of the Kerala postal circle.