Dulles, Virginia Postal Service to allow Sterling businesses and residents to use Dulles as an alternative address. The USPS defines Dulles as an "acceptable" city name for the 20166 zip code, whose "actual" city name is Sterling. The addresses for shipping parcels to United States embassies and consulates, as well as their employees worldwide, are located in Dulles. The USPS city name for zipcode 20189 is Dulles. Washington Dulles International Airport is located partially in Dulles (although its postal address uses the Sterling name instead) and partially in Fairfax County. The community derives its name from the airport; the airport in turn
John Foster Dulles son John W. F. Dulles (1913–2008) was a professor of history and specialist in Brazil at the University of Texas at Austin. Their daughter Lillias Dulles Hinshaw (1914–1987) became a Presbyterian minister. Their son Avery Dulles (1918–2008) converted to Roman Catholicism, entered the Jesuit order, and became the first American theologian to be appointed a Cardinal. Upon graduating from law school and passing the bar examination, Dulles joined the New York City law firm of Sullivan & Cromwell, where he specialized in international law. After the start of World War I, Dulles tried to join the United States Army, but