L'Assomption is a regional county municipality in southwestern Quebec

Quebec

Quebec or is a province in east-central Canada. It is the only Canadian province with a predominantly French-speaking population and the only one whose sole official language is French at the provincial level....

, Canada

Canada

Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

. The seat is in L'Assomption

L'Assomption, Quebec

L'Assomption is an off-island suburb of Montreal, in southwestern Quebec, Canada on the L'Assomption River. It is the seat of the Regional County Municipality of L'Assomption. It is located on the outer fringes of the Montreal urban area....

. The region is named for the L'Assomption River

L'Assomption River

The Assomption River is the most important waterway in the Lanaudière region of Quebec, Canada, is over 200 km long, and has a drainage basin of 4220 km². Its source is the Mont Tremblant massif...

 which flows through the region from the north before emptying into the Saint Lawrence River

Saint Lawrence River

The Saint Lawrence is a large river flowing approximately from southwest to northeast in the middle latitudes of North America, connecting the Great Lakes with the Atlantic Ocean. It is the primary drainage conveyor of the Great Lakes Basin...

 in the south of the region at Repentigny

Repentigny, Quebec

Repentigny is an off-island suburb of Montreal, in the province of Quebec, located north of Montreal, on the lower end of the L'Assomption River and on the Saint Lawrence River. Repentigny and Charlemagne are the first towns off the island of Montreal.-History:...

. L'Assomption is located directly north of the city of Montreal

Montreal

Montreal is a city in Canada. It is the largest city in the province of Quebec, the second-largest city in Canada and the seventh largest in North America...

. L'Assomption is located in the Lanaudière

Lanaudière

Lanaudière is one of the seventeen administrative regions of Quebec, Canada, situated immediately to the northeast of Montreal. It has a total population of 429,053 inhabitants.-Geography:...

 region of Quebec.

Cities/Towns

• Charlemagne
  Charlemagne, Quebec
  Charlemagne is an off-island suburb of Montreal, Quebec, Canada. It is located on the north shore of the Rivière des Prairies, northeast of Montreal's downtown core. As of 2006, the population was 5,594....
  
  
• L'Assomption
  L'Assomption, Quebec
  L'Assomption is an off-island suburb of Montreal, in southwestern Quebec, Canada on the L'Assomption River. It is the seat of the Regional County Municipality of L'Assomption. It is located on the outer fringes of the Montreal urban area....
  
  
• L'Épiphanie
• Repentigny
  Repentigny, Quebec
  Repentigny is an off-island suburb of Montreal, in the province of Quebec, located north of Montreal, on the lower end of the L'Assomption River and on the Saint Lawrence River. Repentigny and Charlemagne are the first towns off the island of Montreal.-History:...
  
  

Parish Municipalities

• L'Épiphanie
  L'Épiphanie (parish), Quebec
  L'Épiphanie is a parish municipality in the Lanaudière region of Quebec, Canada, part of the L'Assomption Regional County Municipality.-Demographics:Population:* Population in 2006: 3129 * Population in 2001: 2931...
  
  
• Saint-Sulpice
  Saint-Sulpice, Quebec
  Saint-Sulpice is a municipality in the Lanaudière region of Quebec, Canada, part of the L'Assomption Regional County Municipality. It is located on the north shore of the Saint Lawrence River and includes most of Verchères Islands.-History:...
  
  

Demographics

• Area: 265.233 square kilometres (102.4 sq mi)
• Population: 107,125 inhabitants (2005)
• Density: 403.9 persons/km²