However, attempts to established a church in 1859 were postponed due to the sparcity of Catholics.

[5] By 1885, work on St Patrick's College, Manly had commenced and was completed in 1888.

[6] The Diocese covers 2,763 km2 (1,067 sq mi) and includes both bush and coastal communities.

The following men have been Bishop of Broken Bay:[7] On 10 February 2008 Our Lady of the Rosary, Waitara, was inaugurated as the cathedral of the diocese,[10] succeeding Corpus Christi, the parish church of St Ives.

[11][12] The Diocese of Broken Bay operates a number of agencies and offices to manage various functions of the Diocese such as Catholic outreach and evangelism, family support, disability support, and education.