Harrison, MS
Harrison County in Mississippi has 25 FEMA disaster declarations on record covering 1965–2021, most recently Hurricane Ida on Oct 22, 2021 (DR-4626). Its flood risk grade is B (Moderate risk), ranking #32 of 3,277 U.S. counties, with 172 NFIP flood insurance claims totaling $3,415,916 in payouts. Flood risk is relatively low compared to the national average.
FEMA Disaster Declarations in Harrison County
The 25 most recent federally declared disasters affecting Harrison County, MS (1965–2021). Total declarations on record: 25.
| Declared | Incident Type | Title | FEMA Disaster # |
|---|---|---|---|
| Oct 22, 2021 | Hurricane | Hurricane Ida | DR-4626 |
| Aug 28, 2021 | Hurricane | Hurricane Ida | DR-3569 |
| Dec 31, 2020 | Hurricane | Hurricane Zeta | DR-4576 |
| Oct 28, 2020 | Hurricane | Hurricane Zeta | DR-3550 |
| Oct 8, 2020 | Hurricane | Hurricane Delta | DR-3548 |
| Sep 14, 2020 | Hurricane | Hurricane Sally | DR-3544 |
| Aug 23, 2020 | Hurricane | Hurricane Marco and Tropical Storm Laura | DR-3539 |
| Nov 22, 2017 | Hurricane | Hurricane Nate | DR-4350 |
| Oct 7, 2017 | Hurricane | Hurricane Nate | DR-3393 |
| Aug 29, 2012 | Hurricane | Hurricane Isaac | DR-4081 |
| Aug 28, 2012 | Hurricane | Tropical Storm Isaac | DR-3348 |
| Sep 22, 2008 | Hurricane | Hurricane Gustav | DR-1794 |
| Aug 30, 2008 | Hurricane | Hurricane Gustav | DR-3291 |
| Aug 29, 2005 | Hurricane | Hurricane Katrina | DR-1604 |
| Aug 28, 2005 | Hurricane | Hurricane Katrina | DR-3213 |
| Jul 10, 2005 | Hurricane | Hurricane Dennis | DR-1594 |
| Sep 15, 2004 | Hurricane | Hurricane Ivan | DR-1550 |
| Oct 1, 2002 | Hurricane | Tropical Storm Isidore | DR-1436 |
| Oct 1, 1998 | Hurricane | Hurricane Georges | DR-1251 |
| Sep 28, 1998 | Hurricane | Hurricane Georges | DR-3132 |
| Sep 4, 1985 | Hurricane | Hurricane Elena | DR-741 |
| Sep 13, 1979 | Hurricane | Hurricane Frederic | DR-599 |
| Apr 18, 1974 | Flood | Heavy Rains & Flooding | DR-430 |
| Aug 18, 1969 | Hurricane | Hurricane Camille | DR-271 |
| Sep 25, 1965 | Hurricane | Hurricane Betsy | DR-210 |
Score Breakdown
The composite score of 29 is calculated from four weighted factors. See our methodology for details.
Other Counties in Mississippi
| County | Grade | Score | Claims | Disasters |
|---|---|---|---|---|
| Hancock | B | 27 | 82 | 22 |
| Jackson | B | 23 | 142 | 25 |
| George | A | 20 | 2 | 23 |
| Stone | A | 20 | 2 | 23 |
| Coahoma | A | 19 | 14 | 8 |
| Greene | A | 18 | 1 | 20 |
More Counties in Mississippi
Frequently Asked Questions
How many FEMA disaster declarations does Harrison County, MS have?
Harrison County, MS has 25 federal disaster declarations on FEMA record (1965–2021). The 5 most recent are: Hurricane Ida (declared Oct 22, 2021, DR-4626); Hurricane Ida (declared Aug 28, 2021, DR-3569); Hurricane Zeta (declared Dec 31, 2020, DR-4576); Hurricane Zeta (declared Oct 28, 2020, DR-3550); Hurricane Delta (declared Oct 8, 2020, DR-3548). Counts include flood, severe storm, hurricane, and coastal storm declarations from the OpenFEMA DisasterDeclarationsSummaries dataset.
What is the flood risk grade for Harrison County, MS?
Harrison County is graded B (composite score 29/100, moderate risk). It ranks #32 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 Harrison County?
172 NFIP flood insurance claims have been filed in Harrison County, MS, totaling $3,415,916 in payouts. The average claim is $19,860. Source: FEMA FimaNfipClaims v2 dataset.
Has Harrison County, MS had any recent flood disasters?
Yes. The most recent FEMA declaration affecting Harrison County was Hurricane Ida on Oct 22, 2021 (DR-4626). The county has 25 declared disasters in the OpenFEMA record covering 1965–2021.
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.
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.