[1] In 1822. the geographic township of Settrington was proclaimed, named after a village in Yorkshire, England.

Colonization of the area began in 1830 with the arrival of the first settlers from Les Éboulements.

[1] Rivers flowing through the municipality are: The municipality of Saint-Hilarion lies about 10 kilometres (6.2 mi) from the center of the Charlevoix impact structure, discovered in 1968 and which, in 2009, is considered the thirteenth largest impact structure identified on Earth.

Its soil, as in many municipalities in Charlevoix, is full of impactite, rocky material found at the site of a meteoric impact.

[3] Mother tongue (2021):[3] List of former mayors: The most famous native of Saint-Hilarion is the journalist Olivar Asselin (1874-1937), who participated in the founding of the newspaper Le Devoir in 1910.