Flood Risk by County in Connecticut

Connecticut: 9 counties covered

Across 9 Connecticut counties with a FEMA flood score, the average national percentile is 92.3, but that average hides real spread between counties, which is why each one gets its own page rather than a single statewide number.

• Capitol Planning Region, 99th percentile, Relatively High
• Western Connecticut Planning Region, 98.1th percentile, Relatively High
• South Central Connecticut Planning Region, 96.9th percentile, Relatively High
• Naugatuck Valley Planning Region, 96.3th percentile, Relatively High
• Greater Bridgeport Planning Region, 94.8th percentile, Very High
• Southeastern Connecticut Planning Region, 91.8th percentile, Relatively Moderate
• Lower Connecticut River Valley Planning Region, 90.3th percentile, Relatively Moderate
• Northwest Hills Planning Region, 88th percentile, Relatively Moderate
• Northeastern Connecticut Planning Region, 75.2th percentile, Relatively Moderate