riskbycounty
FEMA NRI v1.20Released December 2025Methodology

Greenville County Disaster Risk

Greenville County, South Carolina

FEMA Risk Rating

Relatively Moderate

NRI score (0–100 relative scale)

94.0

FEMA composite county value

State Rank

#5

of 46, sorted high to low by RiskByCounty

Flood NRI score

96.0

higher coastal/inland value

Hazard Risk Breakdown

Five selected hazard categories out of FEMA's 18. Values are FEMA NRI v1.20 scores on a 0–100 relative scale.

Tornado

96.6 / 100

Flood

96.0 / 100

Higher of FEMA Coastal Flooding (Not available) and Inland Flooding (96.0) NRI scores.

Earthquake

92.8 / 100

Hurricane

83.0 / 100

Wildfire

55.1 / 100

FEMA NRI data summary

Selected hazard scores for Greenville County

Among the five hazard categories displayed by RiskByCounty, tornado has the highest NRI score for this county.

Tornado
96.6
Flood
96.0
Earthquake
92.8
Hurricane
83.0
Wildfire
55.1

Higher of FEMA Coastal Flooding and Inland Flooding NRI scores

Displayed flood score
96.0
Coastal Flooding
Not available
Inland Flooding
96.0

These five categories are a selected subset of FEMA's 18 natural hazards. FEMA's composite score and official rating are separate fields in the National Risk Index dataset.

FEMA National Risk Index documentation

Official Ready.gov resource

Continue to Ready.gov for federal emergency-planning information maintained outside RiskByCounty.

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Frequently Asked Questions

How many South Carolina county records are included?
RiskByCounty includes 46 South Carolina county records from FEMA NRI v1.20 (December 2025).
Which FEMA county ratings appear in South Carolina?
FEMA NRI v1.20 (December 2025) county rating counts for South Carolina: Very Low: 7; Relatively Low: 19; Relatively Moderate: 16; Relatively High: 4; Very High: 0; Not available: 0.
How complete are the five selected hazard fields for South Carolina?
FEMA NRI v1.20 (December 2025) availability among 46 county records: Flood: 46 of 46; Wildfire: 46 of 46; Tornado: 46 of 46; Earthquake: 46 of 46; Hurricane: 46 of 46. RiskByCounty displays five selected hazard categories out of FEMA's 18.
What FEMA NRI information is available for Greenville County, SC?
Greenville County has an official FEMA NRI v1.20 composite rating of Relatively Moderate and an NRI score (0–100 relative scale) of 94.0. RiskByCounty ranks it 5th of 46 South Carolina county records when sorting the FEMA composite NRI scores from high to low.
Which selected hazard scores are shown for Greenville County?
RiskByCounty displays five selected hazard categories out of FEMA's 18 using FEMA NRI v1.20 (December 2025). For Greenville County, Tornado: 96.6; Flood: 96.0; Earthquake: 92.8; Hurricane: 83.0; Wildfire: 55.1.
How is flood displayed for Greenville County?
RiskByCounty's flood display is the higher of FEMA Coastal Flooding and Inland Flooding NRI scores. For Greenville County, Coastal Flooding is Not available, Inland Flooding is 96.0, and the displayed flood score is 96.0.

Counties with Similar Risk

Dorchester County

South Carolina

-0.3

Relatively Moderate

NRI score 93.7

Berkeley County

South Carolina

+0.9

Relatively High

NRI score 94.8

Richland County

South Carolina

-0.9

Relatively Moderate

NRI score 93.1

Published by RiskByCounty

County summaries are deterministic transformations of frozen FEMA county fields. No external subject-matter reviewer is credited.

Published · Updated

Data Source

County data sourced from FEMA National Risk Index v1.20, released December 2025. Values are labeled NRI score (0–100 relative scale). RiskByCounty displays five selected hazard categories out of FEMA's 18; flood is the higher of the Coastal Flooding and Inland Flooding source scores.

RiskByCounty presents county-level source fields and deterministic arithmetic summaries.

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