Jefferson, MS
Jefferson County in Mississippi has 14 FEMA disaster declarations on record covering 1965–2021, most recently Hurricane Ida on Oct 22, 2021 (DR-4626). Its flood risk grade is A (Low risk), ranking #569 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 Jefferson County
The 14 most recent federally declared disasters affecting Jefferson County, MS (1965–2021). Total declarations on record: 14.
| Declared | Incident Type | Title | FEMA Disaster # |
|---|---|---|---|
| Oct 22, 2021 | Hurricane | Hurricane Ida | DR-4626 |
| Aug 28, 2021 | Hurricane | Hurricane Ida | DR-3569 |
| 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 |
| Aug 29, 2012 | Hurricane | Hurricane Isaac | DR-4081 |
| May 11, 2011 | Flood | Flooding | DR-1983 |
| May 4, 2011 | Flood | Flooding | DR-3320 |
| Sep 22, 2008 | Hurricane | Hurricane Gustav | DR-1794 |
| Aug 30, 2008 | Hurricane | Hurricane Gustav | DR-3291 |
| Aug 29, 2005 | Hurricane | Hurricane Katrina | DR-1604 |
| Sep 15, 2004 | Hurricane | Hurricane Ivan | DR-1550 |
| Apr 18, 1974 | Flood | Heavy Rains & Flooding | DR-430 |
| Sep 25, 1965 | Hurricane | Hurricane Betsy | DR-210 |
Score Breakdown
The composite score of 15 is calculated from four weighted factors. See our methodology for details.
Other Counties in Mississippi
| County | Grade | Score | Claims | Disasters |
|---|---|---|---|---|
| Forrest | A | 15 | 33 | 20 |
| Copiah | A | 15 | 2 | 13 |
| Franklin | A | 15 | 0 | 13 |
| Lawrence | A | 16 | 2 | 16 |
| Walthall | A | 16 | 4 | 15 |
| Jones | A | 16 | 7 | 18 |
More Counties in Mississippi
Frequently Asked Questions
How many FEMA disaster declarations does Jefferson County, MS have?
Jefferson County, MS has 14 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 Delta (declared Oct 8, 2020, DR-3548); Hurricane Sally (declared Sep 14, 2020, DR-3544); Hurricane Marco and Tropical Storm Laura (declared Aug 23, 2020, DR-3539). Counts include flood, severe storm, hurricane, and coastal storm declarations from the OpenFEMA DisasterDeclarationsSummaries dataset.
What is the flood risk grade for Jefferson County, MS?
Jefferson County is graded A (composite score 15/100, low risk). It ranks #569 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 Jefferson County?
0 NFIP flood insurance claims have been filed in Jefferson County, MS, totaling $0 in payouts. The average claim is $0. Source: FEMA FimaNfipClaims v2 dataset.
Has Jefferson County, MS had any recent flood disasters?
Yes. The most recent FEMA declaration affecting Jefferson County was Hurricane Ida on Oct 22, 2021 (DR-4626). The county has 14 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.
The methodology behind every numeric value on this page is publicly documented on the FEMA OpenFEMA datasets including the National Flood Hazard Layer and NFIP claims portal and described in detail on this site’s methodology page. Refresh cadence varies by underlying series; the page surfaces the as-of date for each number so readers can trace any figure back to the source release.
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.