Saint-Elphège (French pronunciation: [sɛ̃t‿ɛlfɛʒ]) is a parish municipality located on the east bank of the Saint-François River in the Nicolet-Yamaska Regional County Municipality of Quebec, Canada.

The population as of the Canada 2011 Census was 292.

In the 2021 Census of Population conducted by Statistics Canada, Saint-Elphège had a population of 251 living in 102 of its 110 total private dwellings, a change of -7% from its 2016 population of 270.

With a land area of 40.53 km2 (15.65 sq mi), it had a population density of 6.2/km2 (16.0/sq mi) in 2021.

[5] Population trend:[6] Mother tongue language (2006)[7]