Connecticut Natural Disaster Risk by County
FEMA National Risk Index rankings for all 9 counties
Connecticut spans 9 counties with an average FEMA National Risk Index score of 87.6 (high risk) and roughly $1.21B in combined expected annual loss statewide. 3 counties are rated High or Very High risk.
Leading the state for risk is Capitol Planning Region (score 97.4, high), while Northeastern Connecticut Planning Region (score 62.8) carries the lowest. Use the table below to compare every county by score, top hazard, and expected annual loss.
County Rankings
| # | County | Risk Score | Risk Rating | Top Hazard | Ann. Loss |
|---|---|---|---|---|---|
| 1 | Capitol Planning Region | High | Riverine Flood | $302M | |
| 2 | Western Connecticut Planning Region | High | Riverine Flood | $260M | |
| 3 | South Central Connecticut Planning Region | High | Hurricane | $174M | |
| 4 | Naugatuck Valley Planning Region | Medium | Riverine Flood | $140M | |
| 5 | Greater Bridgeport Planning Region | Medium | Strong Wind | $104M | |
| 6 | Southeastern Connecticut Planning Region | Medium | Hurricane | $83M | |
| 7 | Lower Connecticut River Valley Planning Region | Medium | Riverine Flood | $63M | |
| 8 | Northwest Hills Planning Region | Low | Riverine Flood | $54M | |
| 9 | Northeastern Connecticut Planning Region | Low | Hurricane | $33M |
All 9 Connecticut counties, ranked by FEMA National Risk Index score.
Frequently Asked Questions
Which Connecticut county has the highest natural disaster risk?
Capitol Planning Region has the highest FEMA National Risk Index score in Connecticut at 97.4 (High), driven largely by riverine flood.
What is the average natural disaster risk in Connecticut?
Connecticut counties average a National Risk Index score of 87.6 across 9 counties, with 3 rated High or Very High risk.
How much are expected annual losses across Connecticut?
FEMA estimates roughly $1.21B in combined expected annual loss from natural hazards across all Connecticut counties.