There are three municipalities in Peel (1.38 million), five in Halton (0.55 million), eight in Durham (0.65 million) & nine in York (1.11 million).
Mississauga is approximately 0.8 million. 1/4
But Durham is 8 municipalities and now Peel is only 2.
But if this new Peel is merged with Halton, there will be 7 local municipalities, 1.1 million population. 2/4