Hybla Valley is a census-designated place

Census-designated place

A census-designated place is a concentration of population identified by the United States Census Bureau for statistical purposes. CDPs are delineated for each decennial census as the statistical counterparts of incorporated places such as cities, towns and villages...

 (CDP) in Fairfax County

Fairfax County, Virginia

Fairfax County is a county in Virginia, in the United States. Per the 2010 Census, the population of the county is 1,081,726, making it the most populous jurisdiction in the Commonwealth of Virginia, with 13.5% of Virginia's population...

, Virginia

Virginia

The Commonwealth of Virginia , is a U.S. state on the Atlantic Coast of the Southern United States. Virginia is nicknamed the "Old Dominion" and sometimes the "Mother of Presidents" after the eight U.S. presidents born there...

, United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 south of Alexandria, Virginia

Alexandria, Virginia

Alexandria is an independent city in the Commonwealth of Virginia. As of 2009, the city had a total population of 139,966. Located along the Western bank of the Potomac River, Alexandria is approximately six miles south of downtown Washington, D.C.Like the rest of northern Virginia, as well as...

. Nearby CDPs include Groveton, Virginia

Groveton, Virginia

Groveton is a census-designated place in Fairfax County, Virginia, United States. Nearby CDPs are Mount Vernon, Virginia , Belle Haven, Fairfax County, Virginia and Hybla Valley, Virginia . The population was 14,598 at the 2010 census, down from 21,296 in 2000 due to a reduction in area...

 (north), Belle Haven, Fairfax County, Virginia

Belle Haven, Fairfax County, Virginia

Belle Haven is a census-designated place in Fairfax County, Virginia, United States. Nearby CDPs are Huntington, Virginia , Groveton, Virginia and Fort Hunt, Virginia . The population was 6,518 at the 2010 census....

 (northeast), Fort Hunt, Virginia

Fort Hunt, Virginia

Fort Hunt is a census-designated place in Fairfax County, Virginia, United States. . It is one of the wealthiest places in the United States with a median household income surpassing that of Greenwich, Connecticut and Malibu, California, and is most famous for the site of former P.O...

 (east) and Mount Vernon, Virginia

Mount Vernon, Virginia

Mount Vernon is a census-designated place in Fairfax County, Virginia, United States. Nearby CDPs are Fort Belvoir , Groveton, Virginia and Hybla Valley, Virginia , and Fort Hunt, Virginia...

 (southwest). The population was 15,801 at the 2010 census, down from 16,721 in 2000 due to a reduction in area, resulting from some of the eastward neighborhoods including Hollin Hills

Hollin Hills

Hollin Hills is a neighborhood of approximately 450 houses conceived and built by the visionary builder Robert C. Davenport, and designed by D.C.-based architect Charles M...

 being moved to Fort Hunt CDP.

The Mason family's Hollin Hall

Hollin Hall

Hollin Hall is an 18th century plantation home on Little Hunting Creek three miles southwest of Alexandria in Fairfax County, Virginia. George Mason, a United States founding father, gave Hollin Hall to his third son, Thomson Mason, through deeds of gift in 1781 and 1786. The land, as given,...

 plantation, just south of Alexandria

Alexandria

Alexandria is the second-largest city of Egypt, with a population of 4.1 million, extending about along the coast of the Mediterranean Sea in the north central part of the country; it is also the largest city lying directly on the Mediterranean coast. It is Egypt's largest seaport, serving...

, had become the property of several owners, including Edward Curtis Gibbs and the Wilson family.