[3] In 2015, York South—Weston elected Canada's first MP of Somali descent, Ahmed Hussen.

Its geographic boundaries are the part of the City of Toronto bounded by a line drawn from Humber River east along Highway 401, south along the Canadian National Railway situated west of Caledonia Road, west along Rogers Road, southeast along Old Weston Road, west along Lavender Road, south along Keele Street, southeast along the Canadian National/Canadian Pacific Railway, west along the Canadian Pacific Railway, and north along the Humber River to Highway 401.

[3] Its new boundaries were originally of the part of Metropolitan Toronto bounded by a line drawn from Eglinton Avenue West north along Keele Street, west along Lawrence Avenue West, south along the Humber River, east and north along the north limit of the City of Toronto, south along Runnymede Road, east along Annette Street, south along Keele Street, east along Humberside Avenue, northwest along the Canadian National Railway, east along the north limit of the City of Toronto, north along the east side of Prospect Cemetery, and west along Eglinton Avenue West to Keele Street.

[3] In 1996, it was redefined to consist of the parts of the cities of North York, Toronto and York bounded by a line drawn from the western limit of the City of North York east along Highway 401, southeast along the Canadian National Railway situated immediately west of Caledonia Road, west along Rogers Road, south along Old Weston Road, west along the northern limit of the City of Toronto, southeast along the Canadian National Railway, west along the Canadian Pacific Railway, and north along the western limit of the cities of York and North York to Highway 401.

Languages: 49% English, 9.8% Portuguese, 7.2% Spanish, 4.8% Italian, 3.2% Tagalog, 3.1% Vietnamese, 2.1% Somali, 1% Yue Religions: 65.9% Christian (41.2% Catholic, 2.8% Pentecostal, 2.3% Christian Orthodox, 1.7% Anglican, 1% Baptist), 18.5% No religion, 8.7% Muslim, 3% Buddhist, 2.6% Hindu Median income (2020): $34,400 Average income (2020): $43,360 Ethnicity groups: White: 41.2%, Black: 24%, Latin American: 9.1%, Filipino: 6.8%, South Asian: 5.7%, Southeast Asian 4.6%, Chinese: 1.9% Ethnic origins: Portuguese 12.2%, Italian 11%, Filipino: 6.2%, Canadian 6%, Jamaican 5.1%, English 4.4%, African 4.2%, Vietnamese 4.2%, Irish 4%, Scottish 3.6% This riding has elected the following members of the House of Commons of Canada: