The Diocese of Vellore was started by Salesians in the year 1952 carving out a portion from the Archdiocese of Madras-Mylapore. Further in 1969, few parishes from the Archdiocese of Pondicherry-Cuddalore were attached to this Diocese. It comprises of two civil districts namely Vellore and Tiruvannamalai. There are 84 parishes having Catholic population of 1, 50,000.