- Electoral district number:
- 35091
- Region:
- Ontario Region
- Area:
- 1,568 km2
- Population**:
- 107,077
- Number of electors on list****:
- 85,439
- Major census subdivisions (municipalities)***:
-
Sarnia
St. Clair
Plympton-Wyoming
Petrolia
Enniskillen
- Adjacent electoral districts
-
- Lambton--Kent--Middlesex
- Electoral boundaries established according to the 2013 Representation Order.
- * Denotes that a census subdivision covers more than one electoral district.
- ** Population based on 2021 census data.
- *** Municipalities in place during 2021 census.
- **** Number of electors on the final lists during the last event.