Just a quick look came up with the following:
Villanova - approximately 10,375 both undergrad/grad
Georgetown - approximately 16,900 with 7600 undergrad
St. John's - approximately 21,500 both undergrad/grad
Seton Hall - approximately 9,700 both undergrad/grad
Marquette - approximately 11,000 both undergrad/grad
Yes, these are all Big East, but I agree that the statement that the Big 6 conferences all have graduating classes larger than our total enrollment is just not true.
What is Philadelphia, Washington, D.C., New York City and Milwaukee, Alex.
Almost all thte BCS schools either are in a large urban center, have a large portion of their state as a fanbase and/or are huge. We barely dominate our city in coverage.