Roussillon Regional County Municipality

Roussillon is a regional county municipality in the Montérégie region of Quebec, Canada. The seat is in Saint-Constant, Quebec. The region's population was 171,443 as of the 2016 census.

Subdivisions
There are 11 subdivisions and one native reserve within the RCM:


 * Cities & Towns (9)
 * Candiac
 * Châteauguay
 * Delson
 * La Prairie
 * Léry
 * Mercier
 * Saint-Constant
 * Sainte-Catherine
 * Saint-Philippe


 * Municipalities (1)
 * Saint-Mathieu


 * Parishes (1)
 * Saint-Isidore


 * Native Reserves (1) (not associated with RCM)
 * Kahnawake

Access Routes
Highways and numbered routes that run through the municipality, including external routes that start or finish at the county border:


 * Autoroutes


 * Principal Highways


 * Secondary Highways


 * External Routes
 * None