In addition to York, it administers the churches of Sacred Beart in Beverly, Our Lady of the Rosary in Brookton, and St. Ann's in Pingelly.

It is noted in particular for its parish church, constructed from 1875 to 1883, a double volume stone and slate building with a four level tower in the Victorian Academic Gothic style.

[1] The building was originally made of fired brick, rendered with a lime and sand mortar and painted a light brown colour at a cost of £180.

For a short period, the parish was served by Father Anselm Bourke but in 1868, he was replaced by Fr Patrick Joseph Gibney.

At the time of its construction, York was the fourth largest town in Western Australia (after Perth, Fremantle and Albany) and so a "substantial and commodious" building was planned.

[2] The architect of St Patrick's was Joseph Nunan, who was one of the 61 Fenians to arrive on the last convict ship to Australia on 10 January 1868, the Hougoumont.

28 October 1874 was planned for the laying of the foundation stone, but this was delayed until Saint Patrick's Day, 17 March 1875, so that Bishop Matthew Griver could perform the task.

[7] A German immigrant, Thomas Prunster was responsible for many of the timber fittings inside the church: the hammer beams supporting the roof, the high choir and organ gallery above the entrance and the stairway in the tower.