The Catholic Diocese of Ballarat is a diverse and geographically extensive Diocese of twenty-nine parishes which covers the western third of Victoria, extending from the Murray River in the North to the Southern Ocean. To the west it is bounded by the Archdiocese of Adelaide and the Diocese of Port Pirie, to the north by the Diocese of Wilcannia-Forbes and to the East by the Diocese of Sandhurst and the Archdiocese of Melbourne.