Originally Posted by Docere
That's almost all of the Old City of Toronto.
Bathurst to Don is already a rather extensive definition IMO.
This seems to be a perennial Toronto point of contention. A lot of people seem to define practically anywhere between the Don and the Humber as downtown. I get that if someone is in, say, Markham, and they're going to Parkdale, they might say they're going "downtown" as a general directional indicator.
But that seems to be a suburban conflating of "urban" or "old" with "downtown". Realistically, I think it's approximately Sherburne to University, below Bloor. And there's an argument to be made that it widens out the further south you go. i.e., I wouldn't call the Annex between Spadina and Bathurst downtown, but I could see Queen West as far as Spadina, and King West as far as Bathurst.
But if I'm on Ossington or Parliament, I'm not downtown.