About the town » Mount Vernon, Fairfax County, Virginia, United States

Mount Vernon, Virginia Mount Vernon post office Location of Mount Vernon in Fairfax County, Virginia Coordinates: {{#invoke:Coordinates|coord}}{{#coordinates:38|43|31|N|77|6|26|W|type:city(28582)_region:US-VA |primary |name= }} Country United States State Virginia County Fairfax Population  • Total 28,582  • Density 1,450.1/km (3,755.8/sq mi) Time zone Eastern (EST)  • Summer  EDT ZIP code 22121 Area code(s) 703, 571 FIPS code 51-54144 Mount Vernon is a census-designated place (CDP) in Fairfax County, Virginia, United States. Nearby CDPs are Fort Belvoir (west), Groveton, Virginia and Hybla Valley, Virginia (north), and Fort Hunt, Virginia (east). The population was 28,582 at the 2000 census. While "Mount Vernon" -- drawn from the Mount Vernon plantation, the home of George Washington located south of Alexandria -- is often used locally to refer to the entire unincorporated area between Old Town Alexandria and Fort Belvoir, Mount Vernon as defined by the Census Bureau encompasses only the part of it coextensive with Alexandria ZIP code 22309, bounded by the Potomac River to the south, Fort Belvoir to the west, Huntley Meadows Park to the north, and Little Hunting Creek to the east.