Falls Church is an independent city in the Commonwealth of Virginia. As of the 2020 census, the population was 14,658. Falls Church is included in the Washington metropolitan area. Taking its na…Falls Church is an independent city in the Commonwealth of Virginia. As of the 2020 census, the population was 14,658. Falls Church is included in the Washington metropolitan area. Taking its name from The Falls Church, an 18th-century Church of England parish, Falls Church gained township status within Fairfax County in 1875. In 1948, it was incorporated as the City of Falls Church, an independent city with county-level governance status although it is not a county.