It is the mother church of the Diocese of Baton Rouge, and it was listed on the National Register of Historic Places on March 22, 1990.

[5] The church was designated the cathedral church of the Diocese of Baton Rouge by Pope John XXIII in the bull of erection "Peramplum Novae Aureliae" dated July 22, 1961; the erection of the diocese took place on November 8, 1961, with Most Rev.

[2][3][4] Media related to St. Joseph Cathedral (Baton Rouge, Louisiana) at Wikimedia Commons

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