It constitutes the easternmost part of Les Collines-de-l'Outaouais Regional County Municipality, north of the Buckingham Sector of the City of Gatineau.

The following communities and villages are within its boundaries: In 1861, a parish municipality was formed and named L'Ange-Gardien.

In 1869, a post office serving the parish and village was established.

In 1881, it was separated from Buckingham Canton and formed into a parish municipality.

On January 1, 1975, L'Ange-Gardien, Buckingham, Masson, Notre-Dame-de-la-Salette, Angers, Buckingham-South-East, and Buckingham-South-West were merged to form the City of Buckingham, but because of adverse public reaction, the merger did not last long.