The electoral district of Dufferin-Caledon is located in southwestern Ontario, north of Brampton. It includes the County of Dufferin and part of the Regional Municipality of Peel, mainly the Town of Caledon.
The constituency’s population is principally of European origin, primarily British. However, it is home to the largest concentration of Italians in the region. According to the 2016 Census, 17% of the population self-identify as Italian. That translates into 22,020 residents.