Connecticut Risk Spotlight: the highest- and lowest-risk counties (August 2026)
Published 2026-08-13
Every county in Connecticut carries a different mix of natural-hazard, road-safety and crime risk. RiskIndex scores all of them on a single 0–100 composite scale (higher = riskier) built entirely from official U.S. government data — FEMA, NHTSA and the FBI. Here's how Connecticut's counties stack up this month.
The 5 highest-risk counties in Connecticut
| # | County | Composite | Grade |
|---|---|---|---|
| 1 | Capitol County | 58 | C |
| 2 | Western Connecticut County | 57.5 | C |
| 3 | South Central Connecticut County | 57 | C |
| 4 | Naugatuck Valley County | 56.1 | C |
| 5 | Greater Bridgeport County | 55.5 | C |
Across these five, the biggest risk driver is natural hazards (wildfire, flood, severe storms and related perils). Click any county for its full hazard, crash, crime and area profile.
The 5 lowest-risk counties in Connecticut
| # | County | Composite | Grade |
|---|---|---|---|
| 1 | Northeastern Connecticut County | 42.4 | C |
| 2 | Northwest Hills County | 50 | C |
| 3 | Lower Connecticut River Valley County | 51.9 | C |
| 4 | Southeastern Connecticut County | 54.1 | C |
| 5 | Greater Bridgeport County | 55.5 | C |
How these scores are built
The composite blends three government datasets: natural hazard (FEMA National Risk Index, 45%), road safety (NHTSA fatal-crash records, 30%) and crime (FBI Crime Data Explorer, 25%). Each is expressed as a percentile against all U.S. counties, so a score of 80 means an area is riskier than 80% of the country. Full methodology and refresh dates are on our Data Sources page.
Want this data programmatically? The RiskIndex API returns these scores — plus ZIP-level detail and 14 area indicators — as clean JSON. Get a free API key (100 calls/month, no card required), or go commercial from $9/mo.
Scores are statistical percentiles for comparing areas, not predictions, and not a consumer report under the FCRA. See our Terms.