riskbycounty
FEMA NRI v1.20Released December 2025Methodology

Addison County Disaster Risk

Addison County, Vermont

FEMA Risk Rating

Very Low

NRI score (0–100 relative scale)

26.8

FEMA composite county value

State Rank

#10

of 14, sorted high to low by RiskByCounty

Flood NRI score

47.7

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.

Hurricane

67.5 / 100

Earthquake

55.8 / 100

Flood

47.7 / 100

Higher of FEMA Coastal Flooding (Not available) and Inland Flooding (47.7) NRI scores.

Wildfire

21.4 / 100

Tornado

20.3 / 100

FEMA NRI data summary

Selected hazard scores for Addison County

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

Hurricane
67.5
Earthquake
55.8
Flood
47.7
Wildfire
21.4
Tornado
20.3

Higher of FEMA Coastal Flooding and Inland Flooding NRI scores

Displayed flood score
47.7
Coastal Flooding
Not available
Inland Flooding
47.7

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 Vermont county records are included?
RiskByCounty includes 14 Vermont county records from FEMA NRI v1.20 (December 2025).
Which FEMA county ratings appear in Vermont?
FEMA NRI v1.20 (December 2025) county rating counts for Vermont: Very Low: 8; Relatively Low: 6; Relatively Moderate: 0; Relatively High: 0; Very High: 0; Not available: 0.
How complete are the five selected hazard fields for Vermont?
FEMA NRI v1.20 (December 2025) availability among 14 county records: Flood: 14 of 14; Wildfire: 14 of 14; Tornado: 14 of 14; Earthquake: 14 of 14; Hurricane: 14 of 14. RiskByCounty displays five selected hazard categories out of FEMA's 18.
What FEMA NRI information is available for Addison County, VT?
Addison County has an official FEMA NRI v1.20 composite rating of Very Low and an NRI score (0–100 relative scale) of 26.8. RiskByCounty ranks it 10th of 14 Vermont county records when sorting the FEMA composite NRI scores from high to low.
Which selected hazard scores are shown for Addison County?
RiskByCounty displays five selected hazard categories out of FEMA's 18 using FEMA NRI v1.20 (December 2025). For Addison County, Hurricane: 67.5; Earthquake: 55.8; Flood: 47.7; Wildfire: 21.4; Tornado: 20.3.
How is flood displayed for Addison County?
RiskByCounty's flood display is the higher of FEMA Coastal Flooding and Inland Flooding NRI scores. For Addison County, Coastal Flooding is Not available, Inland Flooding is 47.7, and the displayed flood score is 47.7.

Counties with Similar Risk

Orange County

Vermont

-0.3

Very Low

NRI score 26.4

Franklin County

Vermont

+2.4

Very Low

NRI score 29.2

Caledonia County

Vermont

+3.4

Very Low

NRI score 30.2

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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