Apartment-industry contribution to the regional economy: $14 billion

Jobs supported: 131,000

Wages from those jobs: $1.1 billion

Renters: 544,254 (9 pct. of population)

Occupied units: 321,203 (34 pct. in buildings of 50-plus units)

One-person households: 57 pct.

Average monthly rent: $1,414

Renters' spending: $10 billion contributed to region's economy

Construction value (including jobs): $852.3 million

(All figures for 2013)

SOURCES: Stephen S. Fuller, George Mason University's Center for Regional Analysis; SmartAsset