New Hampshire NH
10 counties ranked by FEMA National Risk Index score. Click any column header to re-sort. Scores are 0–100 percentiles relative to all US counties — blank means Not Applicable or Insufficient Data.
| County | Overall | Wildfire | Inland flood | Coastal flood | Earthquake | Heat wave | Tornado | Hurricane | Hail | Strong wind | Winter wx | Ice storm | Cold wave | Lightning | Drought | Landslide | Avalanche | Tsunami | Volcanic |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hillsborough County | 89.8 | 67 | 92.6 | — | 88.2 | 75.4 | 82.6 | 92.6 | 55.4 | 86.9 | 87.4 | 95.4 | 66.2 | 93.2 | 57.9 | 84.2 | 15.2 | — | — |
| Rockingham County | 85.8 | 47.8 | 89.1 | 92.8 | 87.5 | 65 | 73.5 | 83.8 | 35.5 | 72.5 | 65.6 | 91.3 | 57.4 | 74.8 | 77.1 | 72 | 4.4 | — | — |
| Grafton County | 81.8 | 30.9 | 90.1 | — | 69.6 | 44.3 | 24.4 | 78.5 | 19.2 | 48.3 | 93.3 | 75.8 | 54.1 | 80.9 | 0 | 97.8 | 74.1 | — | — |
| Merrimack County | 78.2 | 35.2 | 85.8 | — | 76.1 | 70.6 | 56.2 | 84.8 | 37.2 | 52.5 | 80.4 | 89.8 | 53.8 | 89.2 | 58.8 | 81.1 | 28.5 | — | — |
| Coos County | 72.8 | 16.4 | 77.6 | — | 49 | 12.7 | 10.6 | 77.1 | 6.1 | 22.8 | 88.4 | 69.1 | 87.4 | 52.4 | 0 | 81.5 | 97.5 | — | — |
| Carroll County | 71 | 33.6 | 82 | — | 62.8 | 34.2 | 18.9 | 86.4 | 11.6 | 22.5 | 89.8 | 86.7 | 44 | 67 | 0 | 80.2 | 67.7 | — | — |
| Strafford County | 64.1 | 34.5 | 76 | 44.6 | 77.4 | 49.4 | 42.2 | 76.6 | 20.3 | 43 | 48.5 | 88.1 | 41.8 | 74.3 | 66.3 | 61.7 | — | — | — |
| Cheshire County | 60.5 | 24.5 | 74.8 | — | 58 | 51.6 | 43.6 | 76.1 | 30.4 | 29.9 | 50.8 | 77.8 | 51.4 | 78.6 | 0 | 79.6 | 37.4 | — | — |
| Belknap County | 57.4 | 25.3 | 70.3 | — | 59.8 | 42.5 | 31.4 | 78.4 | 15.6 | 37.6 | 75.3 | 83.5 | 32.5 | 94.8 | 34.4 | 71.6 | 16.4 | — | — |
| Sullivan County | 37.6 | 13.7 | 60.6 | — | 43.1 | 44.5 | 22.7 | 67 | 17.4 | 24.6 | 48.5 | 66.7 | 35.4 | 52.4 | 0 | 77 | 24.9 | — | — |
Source: FEMA National Risk Index v1.20.0, December 2025. Scores are percentile rankings among all US counties — see the methodology page for definitions.