Annandale is a census-designated place (CDP) in Fairfax County , Virginia , United States . [ 3 ] The population was 41,008 at the 2010 census , down from 54,994 in 2000 due to the splitting off of the western part of it to form Wakefield and Woodburn CDP's.

Annandale is located at 38°50'3?N 77°12'41?W ? / ? 38.83417°N 77.21139°W ? / 38.83417; -77.21139 (38.834134, -77.211277) [ 4 ] . Annandale is mostly traversed by the Capital Beltway and Virginia State Route 236 . The center of town is considered to be where Route 236, Columbia Pike, and Backlick Road meet around two miles (3 km) east of Interstate 495 on Route 236.

According to the United States Census Bureau , the CDP has a total area of 13.8 square miles (36 km 2 ), of which, 13.8 square miles (36 km 2 ) of it is land and 0.17% is water. The area is part of the coastal plain located just east of the Fall Line separating the coastal plain of Virginia from the piedmont. It is characterized by rolling hills, stream valleys, and heavy red clay soils.

The Annandale region is bisected by Accotink Creek, which in Colonial times was a primary link for ocean-going ships that would load tobacco and other goods where Little River Turnpike - Annandale's oldest road and the first toll road in America - crosses it. Accotink Creek was dammed in the 1960s to create Lake Accotink, a water supply for the U.S. Army's Fort Belvior Proving Ground located just downstream. Today, Lake Accotink is now a popular recreation area with fishing and boat rentals, and the Proving Ground is closed.

Also along Accotink Creek runs the Fairfax Cross County Trail (CCT) which provides uninterrupted hiking, biking, running and cross-country skiing for 20 miles (32 km) in Annandale. The CCT meanders through parks and forests filled with deer, fox, geese and numerous species of native birds. In the spring, Accotink Creek is stocked with trout and fishermen are often seen wading in its waters

 

As of the census [ 1 ] of 2000, there were 54,994 people, 19,927 households, and 14,088 families residing in the CDP. The population density was 3,984.5 people per square mile (1,538.6/km 2 ). There were 20,243 housing units at an average density of 1,466.7/sq mi (566.4/km 2 ). The racial makeup of the CDP was 64.50% White , 5.86% African American , 0.30% Native American , 19.36% Asian Americans , 0.07% Pacific Islander , 5.94% from other races , and 3.96% from two or more races. Hispanic or Latino of any race were 14.49% of the population.

There were 19,927 households out of which 32.1% had children under the age of 18 living with them, 57.8% were married couples living together, 9.2% had a female householder with no husband present, and 29.3% were non-families. 21.8% of all households were made up of individuals and 6.8% had someone living alone who was 65 years of age or older. The average household size was 2.73 and the average family size was 3.18.

In the CDP the population was spread out with 22.6% under the age of 18, 7.4% from 18 to 24, 32.4% from 25 to 44, 25.9% from 45 to 64, and 11.8% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 95.2 males. For every 100 females age 18 and over, there were 93.3 males.

According to a 2007 estimate, the median income for a household in the CDP was $90,711, and the median income for a family was $111,514. Males had a median income of $50,628 versus $39,360 for females. The per capita income for the community was $31,623. About 4.5% of families and 7.0% of the population were below the poverty line , including 8.9% of those under age 18 and 6.3% of those age 65 or over.