Saint-Thomas-Didyme () is a municipality in Maria-Chapdelaine Regional County Municipality in the Saguenay–Lac-Saint-Jean region of Quebec, Canada. It had a population of 703 in the Canada 2021 Census.

Demographics Population trend:Statistics Canada: 1996, 2001, 2006, 2011, 2016, 2021 census Population in 2021: 703 (2016 to 2021 population change: 4%) Population in 2016: 676 Population in 2011: 677 Population in 2006: 708 Population in 2001: 797 Population in 1996: 855 Population in 1991: 944 Population in 1986: 984 Population in 1981: 1,006 Population in 1976: 1,035 Population in 1971: 1,156 Population in 1966: 1,252 Population in 1961: 1,310 Population in 1956: 1,338 Population in 1951: 1,233 Population in 1941: 903 Population in 1931: 752

Private dwellings occupied by usual residents: 364 (total dwellings: 518)

Mother tongue: English as first language: 0% French as first language: 96.5% English and French as first language: 0% Other as first language: 3.5%

References