Thérèse-De Blainville Regional County Municipality

This article is about the county. For the federal electoral district, see Thérèse-De Blainville. For the town, see Sainte-Thérèse-de-Blainville, Quebec.

Thérèse-De Blainville
Regional county municipality
Location in province of Quebec.
Coordinates: 45°40′N73°53′W / 45.667°N 73.883°W / 45.667; -73.883 [1]
Country	Canada
Province	Quebec
Region	Laurentides
Effective	May 26, 1982
County seat	Sainte-Thérèse
Government [2]
• Type	Prefecture
• Prefect	Eric Westram
Area [2] [3]
• Total	211.90 km2 (81.82 sq mi)
• Land	206.52 km2 (79.74 sq mi)
Population  (2021) [4]
• Total	163,632
• Density	792.3/km2 (2,052/sq mi)
• Change 2016–2021	3.5%
Time zone	UTC−5 (EST)
• Summer (DST)	UTC−4 (EDT)
Area codes	450 and 579
Website	www.mrc-tdb.org

Thérèse-De Blainville (French pronunciation: [teʁɛzdəblɛ̃vil] ) is a regional county municipality in the Laurentides region of Quebec, Canada. It is located immediately north of Laval on the north shore of the Rivière des Mille-Îles.

The population according to the 2021 Canadian Census was 163,632. ^[3]

Subdivisions

There are 7 subdivisions within the RCM, and they are all classified as "Villes" (City or Town): ^[2]

Cities & Towns	Population (2021) [3]	Population (2016) [3]	Change (%) 2016-2021 [3]	Land Area (km2) [3]	Land Area (mi2) [3]	Population density (km2) [3]	Population density (mi2) [3]
Blainville	59,819	56,863	+5.2%	54.97	21.22	1,088	2,819
Bois-des-Filion	10,159	9,636	+5.4%	4.36	1.68	2,330	6,047
Boisbriand	28,308	26,884	+5.3%	27.67	10.68	1,023	2,651
Lorraine	9,502	9,352	+1.6%	5.90	2.28	1,611	4,168
Rosemère	14,090	13,958	+0.9%	10.68	4.12	1,319	3,420
Sainte-Anne-des-Plaines	15,221	14,421	+5.5%	93.44	36.08	163	422
Sainte-Thérèse	26,533	25,989	+2.1%	9.48	3.66	2,799	7,249
Total	163,632	157,103	+4.2%	206.52	79.74	792	2,052

Canada Census Mother Tongue - Thérèse-de-Blainville, Quebec [4]
Census		Total		French				English				French & English				Other
Year		Responses		Count	Trend	Pop %		Count	Trend	Pop %		Count	Trend	Pop %		Count	Trend	Pop %
2021		161,370		130,925	2.17%	81.13%		7,785	16.45%	4.8%		2,750	74.6%	1.7%		17,135	38.35%	10.61%
2016		155,865		133,825	0.11%	85.85%		6,685	6.96%	4.28%		1,575	22.44%	1.01%		12,385	22.44%	7.95%
2011		154,144		133,980	5.71%	86.91%		6,250	5.57%	4.05%		1,355	27.83%	0.87%		10,115	18.51%	6.56%
2006		143,370		126,740	9.40%	89.09%		5,920	4.96%	4.12%		1,060	30.86%	0.73%		8,535	25.24%	5.95%
2001		130,514		115,850	9.42%	88.76%		5,640	0.06%	4.32%		810	16.49%	0.62%		6,815	31.5%	5.22%
1996		119,240		105,870	n/a	88.78%		5,605	n/a	4.7%		970	n/a	0.81%		5,190	n/a	4.35%

Transportation

Access Routes

Highways and numbered routes that run through the municipality, including external routes that start or finish at the county border: ^[5]

Autoroutes A-13 A-15 (TCH) A-640

Principal Highways R-117

Secondary Highways R-335 R-344

External Routes None

See also

• List of regional county municipalities and equivalent territories in Quebec

References

1. "Banque de noms de lieux du Québec: Reference number 141035". toponymie.gouv.qc.ca (in French). Commission de toponymie du Québec.
2. "Répertoire des municipalités: Geographic code 730". www.mamh.gouv.qc.ca (in French). Ministère des Affaires municipales et de l'Habitation.
3. "Census Profile, 2021 Census: Thérèse-De Blainville, Municipalité régionale de comté [Census division], Quebec". Statistics Canada. Retrieved July 27, 2025.
4. Statistics Canada: 1996, 2001, 2006, 2011, 2016, 2021 census
5. Official Transport Quebec Road Map