Loudoun County officials identified eight potential sites along Metro's new Silver Line that could become home to the FBI's new suburban headquarters.

The sites include Dulles World Center, West Dulles Station North, International City, DuPont Fabros, Loudoun Parkway, Moorefield Station, Northwoods and Stonewall. The sites meet the FBI's specification, including at least 40 open acres. All but Stonewall are within two miles of a Metro station, another requirement.

County Board Chairman Scott York said each location offers security and flexibility for the agency, which is moving its operations out of its current D.C. headquarters in the J. Edgar Hoover Building on Pennsylvania Avenue.

"Loudoun offers not one or two, but at least eight qualified sites for an FBI headquarters," York said. "These greenfield sites offer the lowest cost per square foot, and the highest flexibility, of any sites under consideration for the new FBI headquarters."

The county joins a host of other regional jurisdictions competing to land the agency, including Fairfax, Prince William and Stafford counties in Virginia and Prince George's and Montgomery counties in Maryland.

Lawmakers in the District said they plan to offer Poplar Point, which sits along the Anacostia River and neighbors Nationals Park, as a choice.