Okay, the Region of Waterloo is a good bit over 500,000, but the CMA in 2006 was less than 500,000, so here goes:

The City of Kitchener proper has about 220,000 people.

Downtown Kitchener from the west:



Downtown Kitchener from the east:



The City of Waterloo has about 120,000 people.

Uptown Waterloo from the west:



Uptown Waterloo from the north:



The City of Cambridge has about 125,000 people.

Downtown Galt (Cambridge) skyline from the south (big, ain't it?!)