FEMA NRI v1.20Released December 2025Methodology

Vermont Disaster Risk

Natural disaster risk data for all 14 counties.

FEMA release

December 2025

Mean county NRI score

36.4

Counties with Data

of 14 total

County risk atlas

Vermont hazard exposure by county

FEMA NRI v1.20 scores on a 0–100 relative scale. Toggle the composite and five selected hazard categories out of FEMA's 18. Flood is the higher of Coastal Flooding and Inland Flooding NRI scores.

Counties

14/14

Mean county NRI score

36.4

Risk layers

Highest Risk Counties

Chittenden County

Relatively Low

NRI score 63.9

Windsor County

Relatively Low

NRI score 61.6

Windham County

Relatively Low

NRI score 56.9

Bennington County

Relatively Low

NRI score 52.3

Washington County

Relatively Low

NRI score 52.2

Lowest Risk Counties

Grand Isle County

Very Low

NRI score 1.9

Essex County

Very Low

NRI score 3.2

Lamoille County

Very Low

NRI score 18.3

Orange County

Very Low

NRI score 26.4

Addison County

Very Low

NRI score 26.8

All Vermont Counties

County	NRI score	FEMA Rating	Flood	Wildfire	Tornado	Earthquake
Chittenden County	63.9	Relatively Low	76.4	25.4	29.5	76.7
Windsor County	61.6	Relatively Low	76.7	26.9	30.1	53.9
Windham County	56.9	Relatively Low	71.3	20.9	40.0	49.7
Bennington County	52.3	Relatively Low	64.5	20.1	20.9	45.5
Washington County	52.2	Relatively Low	70.9	19.1	13.9	52.4
Rutland County	50.5	Relatively Low	67.3	23.0	25.8	58.2
Orleans County	36.8	Very Low	60.7	18.9	11.1	46.7
Caledonia County	30.2	Very Low	52.8	17.8	10.3	44.9
Franklin County	29.2	Very Low	52.1	12.6	14.8	60.1
Addison County	26.8	Very Low	47.7	21.4	20.3	55.8
Orange County	26.4	Very Low	50.0	17.2	13.3	37.8
Lamoille County	18.3	Very Low	42.8	14.0	10.0	40.5
Essex County	3.2	Very Low	15.4	3.8	4.9	22.5
Grand Isle County	1.9	Very Low	12.8	4.6	4.8	30.6

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.

Official Ready.gov resource

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

Visit Ready.gov →

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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