United States. City is 2 million +, however the area I'm in is very hip/wealthy (mostly young professionals between 23 - 40 with salary jobs). I like to joke that our city's official bird is the crane, because there is a construction crane on every block. The speed at which they build new apartments is ridiculous. They are simply cranking them out as fast as possible to meet demand.

This city is also had the 1/2nd highest growth rate in the US in 14'/15'...if that's any clue. (it's Dallas...)

And yes, apartments do exist here that have great sound insulation, however out of the newer complexes, I'd say most do not. That is my point really.