In the period from 2010 to 2016, the amount of housing in Hays County grew by 26.3 percent to 75,482 units.
Housing grew by 13.7 percent, or 97,320 units, during the same time period in the Austin metro area. The area now has almost 805,800 units. The overall population increased 20% to 2 million.
Williamson County grew 14.5 percent over that 6 year period, putting it as the 2nd fastest area of growth in the region.
Travis County came in third, adding 12.8 percent to their housing stock, adding 56,600 units for a total of 499,060.