Dorchester, MD
Dorchester County in Maryland has 8 FEMA disaster declarations on record covering 1972–2021, most recently Tropical Storm Isaias on Feb 4, 2021 (DR-4583). Its flood risk grade is A (Low risk), ranking #243 of 3,277 U.S. counties, with 26 NFIP flood insurance claims totaling $609,871 in payouts. Flood risk is relatively low compared to the national average.
FEMA Disaster Declarations in Dorchester County
The 8 most recent federally declared disasters affecting Dorchester County, MD (1972–2021). Total declarations on record: 8.
| Declared | Incident Type | Title | FEMA Disaster # |
|---|---|---|---|
| Feb 4, 2021 | Hurricane | Tropical Storm Isaias | DR-4583 |
| Nov 20, 2012 | Hurricane | Hurricane Sandy | DR-4091 |
| Oct 28, 2012 | Hurricane | Hurricane Sandy | DR-3349 |
| Sep 16, 2011 | Hurricane | Hurricane Irene | DR-4034 |
| Aug 27, 2011 | Hurricane | Hurricane Irene | DR-3335 |
| Sep 13, 2005 | Hurricane | Hurricane Katrina Evacuation | DR-3251 |
| Sep 19, 2003 | Hurricane | Hurricane Isabel | DR-1492 |
| Jun 23, 1972 | Flood | Tropical Storm Agnes | DR-341 |
Score Breakdown
The composite score of 19 is calculated from four weighted factors. See our methodology for details.
Other Counties in Maryland
| County | Grade | Score | Claims | Disasters |
|---|---|---|---|---|
| Baltimore | A | 19 | 59 | 11 |
| Anne Arundel | A | 19 | 64 | 10 |
| Queen Anne's | A | 19 | 17 | 7 |
| Somerset | A | 19 | 19 | 8 |
| Calvert | A | 20 | 15 | 10 |
| Charles | A | 20 | 15 | 10 |
More Counties in Maryland
Frequently Asked Questions
How many FEMA disaster declarations does Dorchester County, MD have?
Dorchester County, MD has 8 federal disaster declarations on FEMA record (1972–2021). The 5 most recent are: Tropical Storm Isaias (declared Feb 4, 2021, DR-4583); Hurricane Sandy (declared Nov 20, 2012, DR-4091); Hurricane Sandy (declared Oct 28, 2012, DR-3349); Hurricane Irene (declared Sep 16, 2011, DR-4034); Hurricane Irene (declared Aug 27, 2011, DR-3335). Counts include flood, severe storm, hurricane, and coastal storm declarations from the OpenFEMA DisasterDeclarationsSummaries dataset.
What is the flood risk grade for Dorchester County, MD?
Dorchester County is graded A (composite score 19/100, low risk). It ranks #243 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 Dorchester County?
26 NFIP flood insurance claims have been filed in Dorchester County, MD, totaling $609,871 in payouts. The average claim is $23,457. Source: FEMA FimaNfipClaims v2 dataset.
Has Dorchester County, MD had any recent flood disasters?
Yes. The most recent FEMA declaration affecting Dorchester County was Tropical Storm Isaias on Feb 4, 2021 (DR-4583). The county has 8 declared disasters in the OpenFEMA record covering 1972–2021.
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.