St. Pius X is part of the Star of the Sea Parish, South West Coast.

Star of the Sea Parish South-West Coast is a Roman Catholic Parish located in South Western Victoria. Star of the Sea Parish is part of the Catholic Diocese of Ballarat and was established as a Parish on Friday 1st October 2021 by formal Decree issued by Bishop Paul Bird CSsR. 

Star of the Sea Parish comprises the former parishes of Port Fairy (est. 1849), Warrnambool (est. 1853), Koroit (est. 1886), Dennington (est. 1965) and Warrnambool West (est. 1970).

On Friday July 1st 2022 a further Decree was issued by Bishop Paul Bird CSsR uniting the former Warrnambool East Parish (est. 1973) with the Parish of Star of the Sea South-West Coast.