FEMA NRI v1.20Released December 2025Methodology

Wyoming Disaster Risk

Natural disaster risk data for all 23 counties.

FEMA release

December 2025

Mean county NRI score

37.9

Counties with Data

of 23 total

County risk atlas

Wyoming 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

23/23

Mean county NRI score

37.9

Risk layers

Highest Risk Counties

Laramie County

Relatively Low

NRI score 76.7

Teton County

Relatively Low

NRI score 70.6

Natrona County

Relatively Low

NRI score 68.9

Sheridan County

Relatively Low

NRI score 65.2

Fremont County

Relatively Low

NRI score 59.7

Lowest Risk Counties

Niobrara County

Very Low

NRI score 3.3

Weston County

Very Low

NRI score 7.9

Crook County

Very Low

NRI score 16.1

Hot Springs County

Very Low

NRI score 16.1

Uinta County

Very Low

NRI score 16.7

All Wyoming Counties

County	NRI score	FEMA Rating	Flood	Wildfire	Tornado	Earthquake
Laramie County	76.7	Relatively Low	67.0	91.9	88.4	70.0
Teton County	70.6	Relatively Low	34.7	90.6	19.4	87.1
Natrona County	68.9	Relatively Low	74.7	93.0	36.9	82.8
Sheridan County	65.2	Relatively Low	74.4	93.9	22.2	65.5
Fremont County	59.7	Relatively Low	66.5	92.6	19.6	86.2
Park County	57.7	Relatively Low	60.8	82.7	25.9	78.2
Campbell County	56.1	Relatively Low	40.2	92.9	46.3	72.3
Lincoln County	51.9	Relatively Low	35.5	83.6	12.9	87.8
Albany County	48.5	Relatively Low	44.1	84.7	36.7	61.5
Carbon County	42.7	Very Low	50.3	81.9	8.6	60.7
Converse County	31.4	Very Low	40.4	91.1	24.2	55.3
Big Horn County	31.1	Very Low	52.4	61.4	16.7	61.4
Sweetwater County	30.6	Very Low	52.4	66.2	9.4	65.6
Goshen County	28.5	Very Low	31.0	72.6	47.0	38.9
Platte County	25.7	Very Low	33.2	87.6	33.6	40.6
Washakie County	24.4	Very Low	48.6	66.7	15.0	71.7
Sublette County	21.6	Very Low	21.4	87.7	5.8	76.2
Johnson County	19.3	Very Low	36.9	87.8	15.6	57.7
Uinta County	16.7	Very Low	34.1	83.5	10.4	64.2
Hot Springs County	16.1	Very Low	39.4	66.4	11.4	60.8
Crook County	16.1	Very Low	20.1	85.1	22.2	29.2
Weston County	7.9	Very Low	8.2	83.7	22.3	31.3
Niobrara County	3.3	Very Low	6.9	80.9	13.5	28.4

Frequently Asked Questions

How many Wyoming county records are included?

RiskByCounty includes 23 Wyoming county records from FEMA NRI v1.20 (December 2025).

Which FEMA county ratings appear in Wyoming?

FEMA NRI v1.20 (December 2025) county rating counts for Wyoming: Very Low: 14; Relatively Low: 9; Relatively Moderate: 0; Relatively High: 0; Very High: 0; Not available: 0.

How complete are the five selected hazard fields for Wyoming?

FEMA NRI v1.20 (December 2025) availability among 23 county records: Flood: 23 of 23; Wildfire: 23 of 23; Tornado: 23 of 23; Earthquake: 23 of 23; Hurricane: 0 of 23. 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.

← Back to All States

Explore more data for Wyoming

Property Tax Cost of Living Crime Rate Income Health Schools Water Quality Weather County Score