riskbycounty
FEMA NRI v1.20Released December 2025Methodology

Colorado Disaster Risk

Natural disaster risk data for all 64 counties.

FEMA release

December 2025

Mean county NRI score

40.7

Counties with Data

64

of 64 total

County risk atlas

Colorado 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

64/64

Mean county NRI score

40.7

Risk layers

6

All Colorado Counties

CountyNRI score
Denver County95.2
Jefferson County94.9
El Paso County94.1
Arapahoe County93.8
Adams County91.2
Boulder County90.7
Larimer County90.1
Weld County89.2
Douglas County88.7
Pueblo County82.5
Eagle County76.2
La Plata County75.2
Mesa County75.1
Fremont County68.6
Garfield County64.5
Summit County60.2
Logan County58.7
Pitkin County54.1
Morgan County51.9
Delta County51.3
Chaffee County51.1
Otero County50.7
Grand County50.2
Montrose County49.0
Prowers County48.6
Montezuma County47.6
Clear Creek County46.7
Rio Grande County45.8
Gunnison County45.0
Alamosa County40.4
Teller County38.8
Rio Blanco County37.6
Yuma County36.8
Elbert County36.6
Broomfield County34.7
Archuleta County34.5
Routt County33.4
Kit Carson County32.5
Huerfano County24.2
Las Animas County23.6
Baca County23.2
Conejos County22.9
Park County22.2
San Miguel County19.1
Ouray County17.7
Saguache County14.2
Phillips County12.3
Moffat County12.1
Washington County12.0
Jackson County11.8
Dolores County11.3
San Juan County10.7
Lincoln County7.5
Costilla County6.6
Sedgwick County6.5
Gilpin County6.4
Lake County5.7
Bent County5.6
Mineral County5.4
Custer County3.9
Crowley County3.9
Kiowa County3.8
Cheyenne County3.0
Hinsdale County1.0

Frequently Asked Questions

How many Colorado county records are included?
RiskByCounty includes 64 Colorado county records from FEMA NRI v1.20 (December 2025).
Which FEMA county ratings appear in Colorado?
FEMA NRI v1.20 (December 2025) county rating counts for Colorado: Very Low: 35; Relatively Low: 19; Relatively Moderate: 8; Relatively High: 2; Very High: 0; Not available: 0.
How complete are the five selected hazard fields for Colorado?
FEMA NRI v1.20 (December 2025) availability among 64 county records: Flood: 64 of 64; Wildfire: 64 of 64; Tornado: 64 of 64; Earthquake: 64 of 64; Hurricane: 0 of 64. 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.

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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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