Manassas, VA
Manassas County in Virginia has 5 FEMA disaster declarations on record covering 2003–2018, most recently Hurricane Florence on Sep 11, 2018 (DR-3403). Its flood risk grade is A (Low risk), ranking #2155 of 3,277 U.S. counties, with 0 NFIP flood insurance claims totaling $0 in payouts. Flood risk is relatively low compared to the national average.
FEMA Disaster Declarations in Manassas County
The 5 most recent federally declared disasters affecting Manassas County, VA (2003–2018). Total declarations on record: 5.
| Declared | Incident Type | Title | FEMA Disaster # |
|---|---|---|---|
| Sep 11, 2018 | Hurricane | Hurricane Florence | DR-3403 |
| Nov 26, 2012 | Hurricane | Hurricane Sandy | DR-4092 |
| Oct 29, 2012 | Hurricane | Hurricane Sandy | DR-3359 |
| Sep 12, 2005 | Hurricane | Hurricane Katrina Evacuation | DR-3240 |
| Sep 18, 2003 | Hurricane | Hurricane Isabel | DR-1491 |
Score Breakdown
The composite score of 10 is calculated from four weighted factors. See our methodology for details.
Other Counties in Virginia
| County | Grade | Score | Claims | Disasters |
|---|---|---|---|---|
| James City | A | 10 | 5 | 10 |
| Montgomery | A | 10 | 6 | 8 |
| Galax | A | 10 | 0 | 5 |
| Russell | A | 10 | 2 | 5 |
| Bristol | A | 10 | 1 | 4 |
| Newport News | A | 10 | 18 | 12 |
More Counties in Virginia
Frequently Asked Questions
How many FEMA disaster declarations does Manassas County, VA have?
Manassas County, VA has 5 federal disaster declarations on FEMA record (2003–2018). The 5 most recent are: Hurricane Florence (declared Sep 11, 2018, DR-3403); Hurricane Sandy (declared Nov 26, 2012, DR-4092); Hurricane Sandy (declared Oct 29, 2012, DR-3359); Hurricane Katrina Evacuation (declared Sep 12, 2005, DR-3240); Hurricane Isabel (declared Sep 18, 2003, DR-1491). Counts include flood, severe storm, hurricane, and coastal storm declarations from the OpenFEMA DisasterDeclarationsSummaries dataset.
What is the flood risk grade for Manassas County, VA?
Manassas County is graded A (composite score 10/100, low risk). It ranks #2155 of 3,277 U.S. counties for flood risk in our scoring model. The grade combines NFIP claims density (40%), disaster frequency (25%), claim severity (20%), and year-over-year trend (15%).
How many NFIP flood insurance claims have been filed in Manassas County?
0 NFIP flood insurance claims have been filed in Manassas County, VA, totaling $0 in payouts. The average claim is $0. Source: FEMA FimaNfipClaims v2 dataset.
Has Manassas County, VA had any recent flood disasters?
Yes. The most recent FEMA declaration affecting Manassas County was Hurricane Florence on Sep 11, 2018 (DR-3403). The county has 5 declared disasters in the OpenFEMA record covering 2003–2018.
this entity is one of the data points covered by this site’s U.S. flood risk, NFIP claims, and disaster declarations dataset. The detail above comes directly from FEMA OpenFEMA datasets including the National Flood Hazard Layer and NFIP claims; the context that follows situates the headline numbers against the broader distribution across U.S. ZIPs, counties, and states.
Every number on this page links back to FEMA OpenFEMA datasets including the National Flood Hazard Layer and NFIP claims; the methodology page describes the inputs, refresh cadence, and known limitations of the underlying data product.
Practical use of this page is in combination with the comparison and ranking pages elsewhere on the site, which surface the same data for this entity’s peers within U.S. ZIPs, counties, and states. A single-entity reading without peer context can be misleading when an entity is an outlier on one axis but typical on another.
Source: FEMA OpenFEMA datasets, 2026.