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A

Gwinnett, GA

Flood Risk Score: 9/100 · Rank #2478 of 3,277 counties

Gwinnett County in Georgia has 4 FEMA disaster declarations on record covering 1995–2017, most recently Hurricane Irma on Sep 15, 2017 (DR-4338). Its flood risk grade is A (Low risk), ranking #2478 of 3,277 U.S. counties, with 18 NFIP flood insurance claims totaling $316,257 in payouts. Flood risk is relatively low compared to the national average.

9
Risk Score
18
NFIP Claims
$316,257
Total Payouts
4
Disasters
$17,570
Avg Claim
18
Active Policies

FEMA Disaster Declarations in Gwinnett County

The 4 most recent federally declared disasters affecting Gwinnett County, GA (1995–2017). Total declarations on record: 4.

DeclaredIncident TypeTitleFEMA Disaster #
Sep 15, 2017HurricaneHurricane IrmaDR-4338
Sep 8, 2017HurricaneHurricane IrmaDR-3387
Sep 5, 2005HurricaneHurricane Katrina EvacuationDR-3218
Oct 10, 1995HurricaneHurricane OpalDR-1071

Score Breakdown

The composite score of 9 is calculated from four weighted factors. See our methodology for details.

Claims Density
40%
0
Disaster Frequency
25%
9
Claim Severity
20%
0
Year-over-Year Trend
15%
47

Other Counties in Georgia

CountyGradeScoreClaimsDisasters
WaltonA913
DouglasA1055
HaralsonA1005
UnionA1076
ChattahoocheeA1005
MarionA1005
View All Counties in Georgia

Frequently Asked Questions

How many FEMA disaster declarations does Gwinnett County, GA have?

Gwinnett County, GA has 4 federal disaster declarations on FEMA record (1995–2017). The 4 most recent are: Hurricane Irma (declared Sep 15, 2017, DR-4338); Hurricane Irma (declared Sep 8, 2017, DR-3387); Hurricane Katrina Evacuation (declared Sep 5, 2005, DR-3218); Hurricane Opal (declared Oct 10, 1995, DR-1071). Counts include flood, severe storm, hurricane, and coastal storm declarations from the OpenFEMA DisasterDeclarationsSummaries dataset.

What is the flood risk grade for Gwinnett County, GA?

Gwinnett County is graded A (composite score 9/100, low risk). It ranks #2478 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 Gwinnett County?

18 NFIP flood insurance claims have been filed in Gwinnett County, GA, totaling $316,257 in payouts. The average claim is $17,570. Source: FEMA FimaNfipClaims v2 dataset.

Has Gwinnett County, GA had any recent flood disasters?

Yes. The most recent FEMA declaration affecting Gwinnett County was Hurricane Irma on Sep 15, 2017 (DR-4338). The county has 4 declared disasters in the OpenFEMA record covering 1995–2017.

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.