Seven Corners is a commercial center and census-designated place in Fairfax County, Virginia, United States. The population was 9,255 at the 2010 census. Seven Corners has a "Falls Church" mailing address but is not within Falls Church's city limits. The area got its name from the intersection of State Route 7, U.S. Route 50, State Route 613, State …Seven Corners is a commercial center and census-designated place in Fairfax County, Virginia, United States. The population was 9,255 at the 2010 census. Seven Corners has a "Falls Church" mailing address but is not within Falls Church's city limits. The area got its name from the intersection of State Route 7, U.S. Route 50, State Route 613, State Route 338 and Wilson Boulevard. The junction of these four roads once created seven corners.