Delaware, PA
Delaware County in Pennsylvania has 13 FEMA disaster declarations on record covering 1971–2021, most recently Remnants of Hurricane Ida on Sep 10, 2021 (DR-4618). Its flood risk grade is B (Moderate risk), ranking #111 of 3,277 U.S. counties, with 79 NFIP flood insurance claims totaling $2,181,571 in payouts. Flood risk is relatively low compared to the national average.
FEMA Disaster Declarations in Delaware County
The 13 most recent federally declared disasters affecting Delaware County, PA (1971–2021). Total declarations on record: 13.
| Declared | Incident Type | Title | FEMA Disaster # |
|---|---|---|---|
| Sep 10, 2021 | Hurricane | Remnants of Hurricane Ida | DR-4618 |
| Oct 29, 2012 | Hurricane | Hurricane Sandy | DR-3356 |
| Sep 12, 2011 | Flood | Tropical Storm Lee | DR-4030 |
| Sep 8, 2011 | Flood | Remnants of Tropical Storm Lee | DR-3340 |
| Sep 3, 2011 | Hurricane | Hurricane Irene | DR-4025 |
| Aug 29, 2011 | Hurricane | Hurricane Irene | DR-3339 |
| Sep 10, 2005 | Hurricane | Hurricane Katrina | DR-3235 |
| Sep 19, 2004 | Hurricane | Tropical Depression Ivan | DR-1557 |
| Sep 18, 1999 | Hurricane | Hurricane Floyd Major Disaster Declarations | DR-1294 |
| Jan 21, 1996 | Flood | Severe Storms and Flooding | DR-1093 |
| Jul 17, 1973 | Flood | Severe Storms & Flooding | DR-400 |
| Jun 23, 1972 | Flood | Tropical Storm Agnes | DR-340 |
| Sep 18, 1971 | Flood | Floods | DR-312 |
Score Breakdown
The composite score of 22 is calculated from four weighted factors. See our methodology for details.
Other Counties in Pennsylvania
| County | Grade | Score | Claims | Disasters |
|---|---|---|---|---|
| Northampton | B | 22 | 20 | 12 |
| Chester | B | 22 | 48 | 13 |
| Philadelphia | B | 22 | 74 | 13 |
| Bucks | B | 23 | 102 | 15 |
| Schuylkill | B | 21 | 34 | 11 |
| Lancaster | B | 21 | 31 | 11 |
More Counties in Pennsylvania
Frequently Asked Questions
How many FEMA disaster declarations does Delaware County, PA have?
Delaware County, PA has 13 federal disaster declarations on FEMA record (1971–2021). The 5 most recent are: Remnants of Hurricane Ida (declared Sep 10, 2021, DR-4618); Hurricane Sandy (declared Oct 29, 2012, DR-3356); Tropical Storm Lee (declared Sep 12, 2011, DR-4030); Remnants of Tropical Storm Lee (declared Sep 8, 2011, DR-3340); Hurricane Irene (declared Sep 3, 2011, DR-4025). Counts include flood, severe storm, hurricane, and coastal storm declarations from the OpenFEMA DisasterDeclarationsSummaries dataset.
What is the flood risk grade for Delaware County, PA?
Delaware County is graded B (composite score 22/100, moderate risk). It ranks #111 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 Delaware County?
79 NFIP flood insurance claims have been filed in Delaware County, PA, totaling $2,181,571 in payouts. The average claim is $27,615. Source: FEMA FimaNfipClaims v2 dataset.
Has Delaware County, PA had any recent flood disasters?
Yes. The most recent FEMA declaration affecting Delaware County was Remnants of Hurricane Ida on Sep 10, 2021 (DR-4618). The county has 13 declared disasters in the OpenFEMA record covering 1971–2021.
The this entity record above pulls directly from FEMA OpenFEMA datasets including the National Flood Hazard Layer and NFIP claims. What follows is the per-entity context — how this entity sits in the broader U.S. flood risk, NFIP claims, and disaster declarations distribution and which underlying factors drive the headline numbers.
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.
For readers using this page as a decision input, the related-entity pages elsewhere on the site provide the comparison set. The most useful comparison for this entity is typically a peer within U.S. ZIPs, counties, and states with similar size, similar exposure, or similar geography — not the national-level summary alone.
Source: FEMA OpenFEMA datasets, 2026.