FEMA NRI County Summaries
Descriptive views of the NRI score (0–100 relative scale) across 3,144 county records from FEMA NRI v1.20, released December 2025.
RiskByCounty displays five selected hazard categories out of FEMA's 18. Flood is the higher of FEMA Coastal Flooding and Inland Flooding NRI scores.
Unweighted county mean
50.0
States summarized
51
Counties Analyzed
3,144
How to read these summaries
The national value of 50.0 is a RiskByCounty unweighted arithmetic mean across 3,144 reporting counties with available county NRI scores.
Each state value is the same kind of unweighted arithmetic mean across reporting counties in that state. It is not a FEMA state score or rating and does not represent resident prevalence. The ordering is a descriptive sort of those RiskByCounty calculations, not a FEMA ranking.
State county-mean summaries
Each value is a RiskByCounty unweighted arithmetic mean of available county NRI scores. It is not a FEMA state score or rating and does not represent resident prevalence.
Larger unweighted county means
Smaller unweighted county means
County composite NRI score distribution
Counts of reporting counties across NRI score (0–100 relative scale) ranges.
Flood and wildfire NRI scores
Each point is a reporting county. Flood is the higher of FEMA Coastal Flooding and Inland Flooding NRI scores; bubble size represents the composite NRI score.
Unweighted county means by selected hazard
RiskByCounty arithmetic means across available county NRI scores for five selected hazard categories out of FEMA's 18. These are not resident-weighted values.
Ten largest displayed county composite NRI scores
This ordering only describes FEMA county source values; it is not a safety ranking.