Toronto's "favored quarter" runs essentially through 4 electoral districts running north from the core: University-Rosedale (Annex, Rosedale), St. Paul's (Forest Hill, Yonge-St. Clair), Eglinton-Lawrence (North Toronto), and Don Valley West (Lawrence Park, York Mills). These districts have populations of about 100,000 each (and all are rather mixed).
https://www.elections.ca/res/cir/maps2/mapprov.asp?map=Toronto&prov=35&b=n&lang=eAverage income:Don Valley West $109,887
University-Rosedale $98,820
St. Paul's $92,952
Eglinton-Lawrence $81,773
University degree: University-Rosedale 67.1%
Don Valley West 62.7%
St. Paul's 60.5%
Eglinton-Lawrence 53.3%