Dulles, Virginia Dulles, Virginia Dulles () is an unincorporated area in Loudoun County, Virginia, which is part of the Washington metropolitan area. The headquarters of Orbital ATK, GeoEye, and ODIN technologies and the former headquarters of MCI Inc. and AOL are located in Dulles. The National Weather Service Baltimore/Washington forecast office and the National Weather Service's Sterling Field Support Center are also both in Dulles. Dulles covers roughly the southwestern third of Sterling, Virginia (another unincorporated community). The usage of Dulles as a community name began in the mid-1980s when Loudoun County economic development officer Pam Treadwell successfully lobbied the United States
Dulles District Dulles District The 4A Dulles District is a high school conference in the state of Virginia that includes schools from Northern Virginia, with all of its full-time members from Loudoun County. 4A is the third largest enrollment class of the Virginia High School League and is typically very competitive in Virginia high school sports. The Dulles District schools compete in the 4A West Region with the schools from Conference 21A, Conference 22, Conference 23, and Conference 24. The Dulles District was created in 2001 from all six Loudoun County high schools that were in the AA Northwestern District, which were