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). 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 7.86 square miles (20.4 km2), all of it land. The area is part of the coastal plain located just east of the Fall Line separating the coastal plain of Virginia from the ...
Source: Wikipedia (as of 04/11/2019). Read more from Wikipedia