Most metro statistical areas have populations over 2 million...that is a lot of "market" to pin-point a single cash flowing property...I know everyone talks about "markets" but this is not the right approach.

It is easy to see statistical data and get skewed into thinking one way or the other.

To take a income statistic for an entire country is incredibly misleading, you have to look at each city and for that matter even neighbourhood.  

The city is filled with an insane number of contract workers surrounding the entertainment industry and a large immigrant population (probably ignored in these statistics, smh) that subsists on gig work that has quickly come to a halt.Also wtf, $3,432 average rent in Boston. 

That was just a quick and dirty statistic run, without filtering by rental class type, etc.Some data pulled from the web shows job growth expected to grow at around 37% in the future.

I considered the statistics, like the lack of population growth Chicago has recently experienced.  

(I'm a very data driven person so if you have statistical support that would also be awesome!)

I really enjoyed Dave Meyers post here https://www.biggerpockets.com/... as a data guy trained in biological statistics I am much more data driven.

Of course, this information can vary by the exact city or area, considers different factors which may be minor, statistics can be interpreted differently, etc. 

For more information, and statistics, as well as sources.