Counties with the Highest Natural Hazard Risk in Massachusetts
The top 14 of 14 Massachusetts counties on GIS Map, ranked by FEMA National Risk Index score (0-100, national percentile).
| # | County | Risk Index score |
|---|---|---|
| 1 | Middlesex County | 96.9 |
| 2 | Essex County | 95.6 |
| 3 | Suffolk County | 93.5 |
| 4 | Worcester County | 93.5 |
| 5 | Hampden County | 92.8 |
| 6 | Norfolk County | 92.0 |
| 7 | Plymouth County | 90.4 |
| 8 | Bristol County | 89.9 |
| 9 | Barnstable County | 89.1 |
| 10 | Berkshire County | 84.0 |
| 11 | Hampshire County | 69.9 |
| 12 | Franklin County | 60.7 |
| 13 | Nantucket County | 38.7 |
| 14 | Dukes County | 16.8 |
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 Massachusetts”, https://gismap.land/rankings/massachusetts/highest-risk-counties. Figures from FEMA National Risk Index (December 2025).
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