Counties with the Highest Natural Hazard Risk in Pennsylvania
The top 25 of 67 Pennsylvania counties on GIS Map, ranked by FEMA National Risk Index score (0-100, national percentile).
| # | County | Risk Index score |
|---|---|---|
| 1 | Philadelphia County | 99.6 |
| 2 | Allegheny County | 98.1 |
| 3 | Montgomery County | 96.8 |
| 4 | Lancaster County | 95.0 |
| 5 | Bucks County | 94.8 |
| 6 | Lehigh County | 93.9 |
| 7 | Delaware County | 92.9 |
| 8 | Berks County | 92.7 |
| 9 | Chester County | 91.9 |
| 10 | Luzerne County | 91.6 |
| 11 | Dauphin County | 91.1 |
| 12 | York County | 90.4 |
| 13 | Northampton County | 90.0 |
| 14 | Lackawanna County | 89.9 |
| 15 | Westmoreland County | 87.8 |
| 16 | Cumberland County | 86.2 |
| 17 | Schuylkill County | 85.3 |
| 18 | Monroe County | 85.1 |
| 19 | Erie County | 84.1 |
| 20 | Washington County | 83.1 |
| 21 | Fayette County | 82.2 |
| 22 | Lebanon County | 79.9 |
| 23 | Lycoming County | 79.6 |
| 24 | Butler County | 79.3 |
| 25 | Northumberland County | 79.2 |
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 Pennsylvania”, https://gismap.land/rankings/pennsylvania/highest-risk-counties. Figures from FEMA National Risk Index (December 2025).
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