Long considered a safe Liberal seat, Conservative candidate Chungsen Leung won by 932 votes on the May 2, 2011 federal election.

Languages: 29.4% English, 12.3% Mandarin, 9.2% Iranian Persian, 8.3% Korean, 6.7% Yue, 4% Russian, 3.2% Tagalog, 1.8% Spanish, 1.3% Arabic, 1.1% Italian, 1% Hindi, 1% Persian Religions: 38.6% No religion, 38.5% Christian (17.5% Catholic, 3.9% Christian Orthodox, 2% Presbyterian, 1.3% Anglican, 1% United Church), 10.9% Muslim, 4.5% Jewish, 4% Hindu, 2.5% Buddhist Median income (2020): $37,200 Average income (2020): $55,050 As per the 2021 Census, Willowdale has highest percentage of ethnic Iranians (8.9%) and ethnic Koreans (9.4%) of all City of Toronto ridings, and is one of the only four ridings with Chinese being the most frequent ethnic origin.

In the same vein, it is the City of Toronto riding with the highest percentage of people belonging to the West Asian (11%) and Korean (9.9%) visible minorities.

In 2003, it was redefined to consist of that part of the City of Toronto described as follows: commencing at the intersection of the northerly limit of said city with Victoria Park Avenue; thence southerly along said avenue to the hydroelectric transmission line situated northerly of Apache Trail; thence southwesterly along said transmission line to Highway No.

The reduction in land area of the riding was primarily facilitated by substantial population growth along Yonge Street where the on-going redevelopment of land into additional high-rise residential buildings continued with medium-density development (low-rise residential buildings and townhomes) occurring slightly further from Yonge Street and along Sheppard and Finch Avenues.