Connecticut natural disaster risk
Ratings for all 9 counties, the federal disaster record and flood insurance across the state.
Connecticut has had 25 major federal disaster declarations for natural events since 1953. FEMA expects about $1.2 billion a year in losses from natural hazards across the state. Inland flooding is the costliest hazard in 9 of its 9 counties. None is rated Very High overall. About 2% of homes carry federal flood insurance, and the program has paid $0 on 0 claims here since 1978.
Largest counties
Capitol Planning Region
975,267 people
Inland floodingWestern Connecticut Planning Region
620,462 people
Inland floodingSouth Central Connecticut Planning Region
570,229 people
Inland floodingNaugatuck Valley Planning Region
450,296 people
Inland floodingGreater Bridgeport Planning Region
325,728 people
Inland floodingSoutheastern Connecticut Planning Region
280,316 people
Inland floodingLower Connecticut River Valley Planning Region
174,152 people
Inland floodingNorthwest Hills Planning Region
112,433 people
Inland floodingNortheastern Connecticut Planning Region
95,308 people
Inland floodingAll 9 counties
| Name | People | Overall risk | Top hazard | Declarations | Homes insured |
|---|---|---|---|---|---|
| Capitol Planning Region | 975,267 | Inland flooding | 30 | 0.5% | |
| Greater Bridgeport Planning Region | 325,728 | Inland flooding | 31 | 4.9% | |
| Lower Connecticut River Valley Planning Region | 174,152 | Inland flooding | 37 | 4.1% | |
| Naugatuck Valley Planning Region | 450,296 | Inland flooding | 36 | 0.4% | |
| Northeastern Connecticut Planning Region | 95,308 | Inland flooding | 28 | 0.2% | |
| Northwest Hills Planning Region | 112,433 | Inland flooding | 33 | 0.7% | |
| South Central Connecticut Planning Region | 570,229 | Inland flooding | 34 | 3.2% | |
| Southeastern Connecticut Planning Region | 280,316 | Inland flooding | 30 | 2.6% | |
| Western Connecticut Planning Region | 620,462 | Inland flooding | 33 | 3.2% |
Linked names have a full page. Overall risk from the FEMA National Risk Index (December 2025); declarations are federal disaster and emergency declarations for natural events since 1953 (OpenFEMA); homes insured is the share with NFIP flood policies.