adma
Superstar
Any professor who offers 1981 numbers like that has got some serious credibility problems.
The apartment cluster around St Clair W station, basically that little nub of the old City of York that runs between Bathurst and Spadina north of St Clai to Bantry, dropped from 2200 to 1700 residents between 2001 and 2006. Go figure that one out.
1981.
Etobicoke: 163,202
North York: 433,471
Scarborough: 765,602
1991:
Etobicoke: 328,718
North York: 589,653
Scarborough: 558,960
Also worth pointing out that the GTA only made up a small percentage of Toronto's population, while not about half of Toronto's residents now live there.
According to an almanac that I have, Scarborough's population in 1981 was 443,353. I think your proffesor needs to check their data.