Loudoun County, Virginia

See every data center.
Report what it's like to live beside one.

Loudoun holds what the county itself calls the largest concentration of data centers in the world. Map them, report what you are living with, and track every new application the county receives — with your name and address never published.

Open the map Report an issue See how it works Recent reports

Parcels: 224
Operational: 103
Building: 36
Proposed: 85
Built floor area: 36.6M ft²

County tax parcels, not buildings — one campus can span many. Built floor area is the operational parcels only; more is under construction and proposed. Loudoun County GIS, county layers edited Jun 11, 2026.

By the numbers

— Operational parcels Built and running

— Parcels under construction Approved, being built

— Proposed parcels In the county's pipeline layer

— Community reports Submitted by residents

Parcel counts from Loudoun County GIS (—). One parcel is not one data center — a campus can span many parcels, and one parcel can hold several buildings. Where every number comes from.

Act on it

Your tools

Track your reports Follow what you have filed from received to published — signing in is optional, and reporting stays anonymous. Air Permits & GeneratorsSee the state air-permit record behind Loudoun’s data centers. Search DEQ registrations, backup-generator records and permit documents.Open Get alerts Every new county filing, by RSS or straight onto your calendar — nothing to sign up for. How close are you? See every data center within five miles of an address or district — measured in your browser, sent nowhere. See how it happened Twenty years of the buildout, played back from the county's own records. Check the numbers Every source this site reads, when it was last pulled, and how stale it is allowed to get. Report an issue About three minutes, no account needed — your name and address are never published.

What people report

The nine kinds of issue residents can log

Pick whichever ones fit — most reports name more than one.

Latest

See all reports

Recent reports

Loading reports…

Coverage

All coverage

In the news

Add yours

Something happening where you live?

It takes about three minutes. Your name, address and contact details are never published — only the district, an approximate location, and what you describe.

Report an issue Open the map Recent reports

Reports are reviewed by a person before they appear on the map. Read how your information is handled first if you'd like to.

Free public calendar

Meetings & Public Input

Find upcoming data-center hearings, open houses, transmission proceedings and participation deadlines. Filing dates remain in the separate construction calendar.

Browse meetings & deadlines · Subscribe to the public calendar