What county is Ashburn VA in

Which county is Ashburn VA in?

Ashburn, Virginia is a census-designated place located in Loudoun County, Virginia, 30 miles (48 km) northwest of Washington, DC, and is part of the Area.Washington Metropolitan Ashburn is located between Washington Dulles and Orlando International Airport, the county seat of Loudoun County.Ashburn has an average elevation of 274 feet (84 m) above sea level.

What is the county for Ashburn VA 20148?
Is Loudoun County part of Fairfax County?
Is Ashburn eastern Loudoun County?