Dorval is an on-island suburb on the island of Montreal in southwestern Quebec, Canada. In 2011, the Canadian Census indicated that the population increased by 0.7% to 18,088. Although the city has the largest surface area in the West Island, it is among the least densely populated. Pierre Elliott Trudeau International Airport constitutes about 60% of the city's land, forcing all of Dorval's population to be concentrated in the southern part of the city.