Across the street from me are 3 new apartment buildings which collectively house 1500-2000 people.

Down the street are two new apartment buildings which house another 1000-1500 people.

Two blocks away from that are a cluster of apartment buildings which collectively house more than 10,000 people.

And quite frankly, you are simply wrong about the statistics you are citing.

The pre-1990 figure is primarily residential single-family homes, so each structure was on average capable of housing just 4 people. Current residential construction is primarily multi-unit residences, so each structure represents residential capacity, on average, of several dozen people.

So my point stands, and I would strongly recommend you take a statistics course.