| Population | 338,916 (2010-2014), rank #4 |
| Population Growth | 99.83% since 2000, rank #1 |
| Population Density: | 650.34/sq mi, rank #39 |
| Median Household Income: | $123,966 at 2010-2014—53.71% increase since 2000, rank #1 |
| Median House Price: | $443,100 at 2010-2014—121.00% increase since 2000, rank #6 |
| Time Zone: | Eastern GMT -5:00 with Daylight Saving in the Summer |
| Land Area: | 515.56 sq mi, rank #20 |
| Water Area: | 5.58 sq mi (1.07%), rank #44 |
| State: | Virginia |
| Area: | Washington-Arlington-Alexandria, DC-VA-MD-WV |
| School District: | ![](\"http://www.usa.com/img/s9.gif\") , rank #21 |
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