Sterling Virginia sits in Loudoun County — which has earned the title of Data Center Alley, hosting the largest concentration of data centers in the world along the Dulles corridor. Approximately 70% of the world's internet traffic routes through Loudoun County data centers including AWS, Microsoft Azure, Google, and dozens of other cloud providers. A successful attack on Loudoun County data center infrastructure would have catastrophic global internet consequences. The NRO and other intelligence agencies store classified data in this corridor.
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// Risk Intelligence
| Threat Score | 7 / 10 High |
| Primary Hazard | Data Centers / Dulles / Intelligence |
| FEMA Flood Zone | Moderate |
| County FEMA Declarations | 4 |
| Last Major Event | Ida 2021 |
// Emergency Information
| Emergency Phone | 703-777-0100 |
| Evacuation Routes | US-15 VA-28 VA-7 US-50 |
| Elevation | 300 ft above sea level |
// County Risk Profile
Loudoun County VA
Virginia · Tornado / Flash Flooding
View full county emergency preparedness profile →
6/10
Moderate Risk