Saint-Alphonse is a municipality in Quebec, Canada.

Colonization of the place began at the end of the 19th century, when Henri-Joseph Mussely (a Belgian Catholic priest) arrived there, along with about 20 Belgian families. They founded the parish of Saint-Alphonse-de-Liguori in 1891, named after Alphonsus Liguori since Mussely was a Redemptorist. The place was originally known as La Petite-Belgique (French for "Little Belgium"), but the Belgian families did not remain long due to the harsh climate and short growing season, replaced by people from around Chaleur Bay.

In 1901, its post office opened under the name Saint-Alphonse-de-Caplan, referring to the parish name and its proximity to Caplan. The following year, the Municipality of Musselyville was created out of territory ceded by Township of New Richmond and the Parish Municipality of Saint-Bonaventure de Hamilton.

On October 24, 1953, the municipality changed its name from Musselyville to Saint-Alphonse.

Historical Census Data - Saint-Alphonse, Quebec

Year Pop. ±% 1911 630 —     1931 657 +4.3% 1941 859 +30.7% 1951 946 +10.1% 1956 1,029 +8.8% 1961 1,037 +0.8%	Year Pop. ±% 1966 1,035 −0.2% 1971 1,042 +0.7% 1976 1,008 −3.3% 1981 946 −6.2% 1986 918 −3.0% 1991 869 −5.3%	Year Pop. ±% 1996 866 −0.3% 2001 755 −12.8% 2006 731 −3.2% 2011 691 −5.5% 2016 699 +1.2% 2021 711 +1.7%
Source: Statistics Canada

List of former mayors:

• List of municipalities in Quebec

• Official website