16declarations
10major disasters
6emergencies
1972first on record
2026latest
By hazard
Hurricane5
Snowstorm4
Biological2
Severe Storm2
Flood2
Winter Storm1
By decade
11970s
31990s
42000s
52010s
32020s
Population: 420,955 in April 2020, 443,380 in July 2024 (Census Bureau estimates).
Declarations naming Loudoun County
| Declared | Number | Title | Hazard | Programs | Federal aid |
|---|---|---|---|---|---|
| Jan 23, 2026 | EM-3631-VA | Severe Winter Storm | Winter Storm | PA | — |
| Apr 2, 2020 | DR-4512-VA | COVID-19 Pandemic | Biological | IHPPAHM | $1.29 billion |
| Mar 13, 2020 | EM-3448-VA | COVID-19 | Biological | PA | — |
| Sep 11, 2018 | EM-3403-VA | Hurricane Florence | Hurricane | PA | — |
| Mar 7, 2016 | DR-4262-VA | Severe Winter Storm and Snowstorm | Snowstorm | PAHM | $52.3 million |
| Nov 26, 2012 | DR-4092-VA | Hurricane Sandy | Hurricane | IHPPAHM | $12.0 million |
| Oct 29, 2012 | EM-3359-VA | Hurricane Sandy | Hurricane | PA | — |
| Apr 27, 2010 | DR-1905-VA | Severe Winter Storms and Snowstorms | Snowstorm | PAHM | $31.3 million |
| Sep 12, 2005 | EM-3240-VA | Hurricane Katrina Evacuation | Hurricane | PA | $277,442 |
| Sep 18, 2003 | DR-1491-VA | Hurricane Isabel | Hurricane | IHPIAPAHM | $278.3 million |
| Mar 27, 2003 | DR-1458-VA | Severe Winter Storm, Record/Near Record Snowfall, Heavy Rain,floodind, and Mudslide | Severe Storm | IHPIAPAHM | $16.7 million |
| Feb 28, 2000 | DR-1318-VA | Severe Winter Storms | Severe Storm | PAHM | $15.0 million |
| Jan 27, 1996 | DR-1098-VA | Flooding, High Winds, and Wind Driven Rain | Flood | IAPA | — |
| Jan 13, 1996 | DR-1086-VA | Blizzard of 96 (Severe Snow Storm) | Snowstorm | PA | — |
| Mar 25, 1993 | EM-3112-VA | Severe Winter Storm | Snowstorm | PA | — |
| Jun 23, 1972 | DR-339-VA | Tropical Storm Agnes | Flood | IAPA | — |