Mount Vernon is a census-designated place (CDP) and unincorporated community in Fairfax County, Virginia, United States.

[1] Primarily due to its historical significance and natural recreation and beauty, the Mount Vernon area receives over one million tourists each year.

While the name "Mount Vernon"—drawn from the Mount Vernon estate, 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 portion bounded by the Potomac River to the south, Fort Belvoir to the west, U.S. Route 1 to the north, and Little Hunting Creek to the east.

The Neighboring/incorporated Woodlawn Plantation and area which was given to Martha Washington's granddaughter, Eleanor Parke Custis Lewis.

Beginning with the 2010 United States Census, the U.S. Census Bureau defined the portion of Mount Vernon north of U.S. Route 1 as a separate CDP, Woodlawn, reducing Mount Vernon's land area by approximately a third and its population by more than half.

[5] Mount Vernon sits on the Atlantic Coastal Plain on the north side of the Potomac River.

[9][10] The Mount Vernon area is known for its historical and tourist sites and includes several notable locations including: Mount Vernon is, most famously, the home of the first President of the United States, General of the Armies, and tobacco planter George Washington and his wife Martha Dandridge Custis Washington.