It was located in southwestern Ontario and included the town of Sarnia.

Just before the 1967 election it was reconstituted largely as a rural constituency.

Another riding, Sarnia was also created to represent the growing urban centre.

In 1996, all provincial riding was reduced from 133 to 103 to be harmonized as their federal counterparts.

A new riding called Sarnia—Lambton was formed and continues into the present day.