Arlington County directly across the Potomac River from Washington DC contains the Pentagon — headquarters of the US Department of Defense and the largest office building in the world — and Arlington National Cemetery. The county is the most densely populated jurisdiction in Virginia. On September 11 2001 American Airlines Flight 77 struck the Pentagon killing 189 people. The county faces terrorism risk commensurate with its proximity to the US capital and concentration of defense intelligence and government infrastructure.
// Preparedness Recommendations
- Identify an interior room or storm shelter.
- Monitor NOAA weather alerts continuously.
- Keep emergency kit accessible at all times.
- Prepare for sudden power outages.
// Recommended Supplies
Essential gear for power outages, severe weather, and emergency situations in your area.
- Emergency Food Supplies
- Water Filtration & Storage
- Backup Generator
- Solar Backup Power
* We may earn a commission from qualifying purchases.
// Risk Intelligence
| Threat Score | 7 / 10 High Risk |
| Primary Hazard | Terrorism / Tornado |
| Secondary Hazard | Flash Flooding |
| FEMA Flood Zone | High |
| Federally Declared Disasters | 5 |
| Last Major Event | 9/11 Pentagon 2001 |
| Event Frequency | Annual |
// Emergency Operations
| Emergency Mgmt Phone | (703) 228-3100 |
| Emergency Shelters | 10 designated facilities |
| Evacuation Routes | I-66 I-395 US-29 VA-110 |
// County Profile
| County | Arlington County VA |
| State | Virginia (VA) |
| Population | 238 |
| Area | 26 sq miles |
| FEMA Region | High |
// Major Cities
// Cities in This County
// Other Virginia Counties
// Nearby Infrastructure Risks
Critical infrastructure facilities within or near this area that could affect civilian safety during emergencies, conflict, or infrastructure failures.
Infrastructure risk data is for emergency preparedness awareness. Facility locations are publicly known. Always follow official emergency guidance.