166 data centers in Northern Virginia (2019)
Source: Baxtel, Northern Virginia Colocation & Data Center Market
In 2019, Virginia had 186 data centers. Of those, 166 were concentrated in Loudoun, Fairfax, Prince William, and Fauquier counties.
Only five were west of the Blue Ridge in Norton, Blacksburg, Covington, Waynesboro, plus two in Harrisonburg. There were individual data centers in Culpeper, Charlottesville, Lynchburg, and Mecklenburg. Virginia Beach had three others, and the remaining eight were near Richmond.1
The top data center provider was Digital Realty Trust, operating 30 facilities occupying over 3 million gross square feet (including space for offices as well as servers). All were in Northern Virginia, the "Data Center Alley" that had evolved into an ecosystem providing the world's largest data center market.
Equinix controlled 16 data centers occupying over 1 million gross square feet, all in Northern Virginia. The company's Asburn Campus was the largest data center complex in Virginia. Connectivity there was key. Customers located in one of the nine buildings, with a total of nearly 600,0000 gross square feet, could be connected directly to any other customer even if they were located in another building.
The QTS data center in Henrico County's in the White Oak Technology Park was the second-largest complex in the state. The three buildings were located at the former Qimonda semiconductor plant, which used to manufacture memory chips.2
"Fiber Alley" in Loudoun County includes multiple data centers west of Loudoun County Parkway and north of Waxpool Road
Source: ESRI, ArcGis Online
By 2021, the Virginia Economic Development Partnership (VEDP) claimed that Virginia was "The World's Largest Data Center Market" because:3
advocates for building data centers west of Manassas National Battlefield Park proposed a Digital Gateway in Prince William County
Source: Prince William Times p.8, December 2, 2021)
data center west of Haymarket
Source: Historic Prince William, Aerial Photo Survey 2019
in 2021, data centers in Virginia were concentrated in Northern Virginia and the Richmond area
Source: Virginia Economic Development Partnership (VEDP), Data Centers in Virginia
Prince William County defined an overlay district where new data centers would be authorized in the zoning process
Source: Prince William County, Zoning Overlay Districts