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Counties with the Highest Natural Hazard Risk in Connecticut

The top 9 of 9 Connecticut counties on GIS Map, ranked by FEMA National Risk Index score (0-100, national percentile).

#CountyRisk Index score
1Capitol Planning Region
97.4
2Western Connecticut Planning Region
96.3
3South Central Connecticut Planning Region
95.1
4Naugatuck Valley Planning Region
93.2
5Greater Bridgeport Planning Region
91.8
6Southeastern Connecticut Planning Region
88.6
7Lower Connecticut River Valley Planning Region
83.8
8Northwest Hills Planning Region
79.6
9Northeastern Connecticut Planning Region
62.8

Source: FEMA National Risk Index (December 2025). All counties with data are ranked. Estimates carry margins of error.

Citing this page: GIS Map, “Counties with the Highest Natural Hazard Risk in Connecticut”, https://gismap.land/rankings/connecticut/highest-risk-counties. Figures from FEMA National Risk Index (December 2025).

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