Annandale Virginia is located in north-eastern Fairfax county, roughly 10 miles from Washington D.C. It’s just inside the National Capitol Beltway, I495 on Little River Turnpike, rt 236.
Annandale is a census-designated place (CDP) in Fairfax County, Virginia. The population was 41,008 at the 2010 United States Census, down from 54,994 in 2000 due to the splitting off of the western part of it to form Wakefield and Woodburn CDPs.
Source: http://annandaleva.blogspot.com/ & http://annandale.va.us/services.html