Saint-Lambert is a parish municipality in northwestern Quebec, Canada, in the Abitibi-Ouest Regional County Municipality. It had a population of 191 in the 2021 Canadian census. The municipality was incorporated on May 14, 1938.

In the 2021 Census of Population conducted by Statistics Canada, Saint-Lambert had a population of 191 living in 89 of its 95 total private dwellings, a change of -1.5% from its 2016 population of 194. With a land area of 99.81 km (38.54 sq mi), it had a population density of 1.9/km (5.0/sq mi) in 2021.

Historical census populations – Saint-Lambert, Abitibi-Témiscamingue

Year Pop. ±% 1941 384 —     1951 665 +73.2% 1956 770 +15.8% 1961 705 −8.4% 1966 673 −4.5% 1971 628 −6.7% 1976 471 −25.0% 1981 381 −19.1%	Year Pop. ±% 1986 296 −22.3% 1991 305 +3.0% 1996 268 −12.1% 2001 251 −6.3% 2006 222 −11.6% 2011 211 −5.0% 2016 194 −8.1% 2021 191 −1.5%
Source: Statistics Canada

Canada Census Mother Tongue Language - Saint-Lambert, Abitibi-Témiscamingue, Quebec
Census		Total		French				English				French & English				Other
Year		Responses		Count	Trend	Pop %		Count	Trend	Pop %		Count	Trend	Pop %		Count	Trend	Pop %
2021		195		185	2.8%	94.9%		5	0.0%	2.6%		0	100.0%	0.0%		0	0.0%	0.0%
2016		195		180	14.3%	92.3%		5	n/a%	2.6%		5	n/a%	2.6%		0	0.0%	0.0%
2011		210		210	0.0%	100.0%		0	0.0%	0.0%		0	0.0%	0.0%		0	0.0%	0.0%
2006		210		210	16.7%	100.0%		0	0.0%	0.0%		0	100.0%	0.0%		0	0.0%	0.0%
2001		255		245	10.9%	96.1%		0	0.0%	0.0%		10	0.0%	3.9%		0	0.0%	0.0%
1996		285		275	n/a	96.5%		0	n/a	0.0%		10	n/a	3.5%		0	n/a	0.0%

Municipal council (as of 2023):

• Mayor: Diane Provost
• Councillors: Micheline Gagné, Stéphane Godbout, Manon Fluet, Clément Melançon, Claude Garant, Marcel Moreau

List of former mayors:

This list is incomplete; you can help by adding missing items. (July 2023)

• Marco Morin (...–2010)
• Émilien Rivard (2010–2013)
• Diane Provost (2013–present)

• List of parish municipalities in Quebec

• Official website