@ucbalumnus Your numbers are incorrect. I think you included graduate students.
Toronto has an undergraduate enrollment of 70,000, spread across three campuses. The largest campus, St. George, has an undergraduate enrollment of 43,500. UBC’s undergraduate enrollment is 52,000, spread over 2 campuses. UBC’s largest campus, Vancouver, has an undergraduate enrollment of 44,500. McGill has 27,500 undergraduates. The total for the 3 universities is 149,500.
The UC system has 210,000 undergraduates.