Religious affiliations were 31.3% Christian, 1.2% Hindu, 0.4% Islam, 0.7% Buddhist, 0.4% New Age, 0.7% Jewish, and 1.0% other religions.

[4] Point Erin, to the western side of the bay (underneath the Auckland Harbour Bridge) was the location of a Māori pā called Okā, or Te Koraenga ("the headland").

[6] Saint Marys Bay was known as Ko Takere Haere ("the split canoe hull"), recalling an incident where a waka that was being taken ashore by slaves broke.

1853 For £1100 Catholic Bishop Pompallier purchases 19 hectares (47 acres) in the area between Three Lamps and the shoreline from James O’Neill, christening it Mount Saint Mary.

St. Marys School for Boys and a Seminary are built on 5 acres (20,000 m2) of Crown Grant land at the end of Waitemata Street.

The only surviving building from this period is the Kauri St Mary's Chapel constructed in 1865 by Edward Mahoney for £1100.

They form under his direction, the Congregation of the Holy Family, which concentrates on teaching Maori girls.

1886–87 The Catholic Church of the Sacred Heart is built on the corner of O’Neill St and Ponsonby Road.

The Bishop's Palace was partly funded by donations from all over the world including 5,000 schools in Europe and the US, the Lord Mayor of London and an Archduchess of Austria.

This imposing brick gothic structure is believed to be the first house in Auckland to have been constructed with electric lighting.

1950s The foreshore of Saint Marys Bay disappears during the construction of the motorway approaches to the Harbour Bridge.

Cut off from the sea a great number of small commercial boatyards are forced to close and many private boat-slips which have been used for almost a century fall into disuse.

A group of local residents including engineers and architects donate their services to create Westhaven Marina, now one of Auckland's greatest assets.

The suburb used to have direct links down the cliffs with several paths and roads to the foreshore and later to the Wynyard Quarter to its northeast.

In 2012 the Jacobs Ladder Bridge over State Highway 1 was opened as part of motorway works in the northeast of Saint Marys Bay providing a pedestrian link to Westhaven Marina.