Here’s an interesting way to visualize how different regions are growing (or not). Using a tool developed by the University of Virginia Demographics Research Group, Michael Andersen at Bike Portland shares these charts showing where housing growth has happened relative to city centers. The dark brown lines show the number of occupied housing units at one-mile intervals from the urban core in 2012, and the orange lines show the distribution in 1990. The gap between the lines tells you where housing growth has happened, and there is huge variation between regions.
In Denver, for instance, you can see that housing growth was concentrated between eight and 20 miles from the city center:
In other places — especially large, in-demand coastal cities like LA — housing growth has barely changed (note that the y-axis is scaled differently in each chart):