517520 is the PIN Code of Cotton Mills, which is located in Chittoor district, Andhra Pradesh state.
Cotton Mills Post Office is located at Cotton Mills, Chittoor of ANDHRA PRADESH 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 Cotton Mills PO is 517520. This Postoffice falls under Tirupati postal division of the Andhra Pradesh postal circle.