| City : | Mount Vernon |
| County : | Cook County, Fairfax County, Suffolk County |
| State : | Virginia (VA) |
| | |
| Land Area : | 5.24 sq mi |
| Water Area : | 0.83 sq mi |
| Latitude : | 38.7134039 |
| Longitude : | -77.1052461 |
| | |
| Population (2010): | 12,416 |
| Population Estimate (2012) : | 12,271 |
| Population Density : | 2,371.07/sq mi |
| Housing Units (2012) : | 4,773 |
| Median Household Income (2012) : | $121,224 (Virginia : $63,636, USA : $53,046) |
| Median Family Income (2012) : | $142,537 (Virginia : $76,566, USA : $64,585) |
| Median House Price (2012) : | $572,200 (Virginia : $249,700, USA : $181,400) |