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California CA

58 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
Los Angeles County 100 99.9 100 90 100 99.3 97.7 0 93 75.2 74.8 — 5.8 96.9 43.5 99.3 92.4 64.6 —
Riverside County 99.9 100 99.9 — 99.8 98.5 86.7 12 81.4 52.7 66.8 — 13.9 81.5 55.7 98.7 51.6 — 66.8
Alameda County 99.8 97.7 99.7 86 100 97.6 65.8 — 35.8 11.3 4.3 — 0 47.5 85.9 99.8 6.6 60 78.8
Orange County 99.8 99.8 99.8 92 99.9 97.2 83.7 0 79.5 52.3 1.3 — 0 66.9 32.7 99.7 13.7 56.9 —
San Bernardino County 99.8 99.9 99.8 — 99.8 98.4 78.8 0 90.9 97 48.4 — 28.3 95.2 33.5 99.9 78.5 — 31.6
San Diego County 99.7 100 99.7 72.8 99.7 98.7 64.4 8.3 77 52 48.3 — 3.1 80.9 59.4 99.5 32.2 52.3 33.9
Santa Clara County 99.7 97.4 99.8 88.8 99.9 98.6 55.8 — 37.5 9.4 3.1 — 0 46.9 99.2 99.7 13 18.5 15
Contra Costa County 99.5 97.6 99.5 66 99.7 98.3 49.9 — 33 34.4 9.2 — 0 90.8 94.6 99.3 5.3 47.7 77.9
San Francisco County 99.5 28.7 98.6 62 99.8 93.9 34.9 — 18.1 10.3 1.2 — 0 29.9 69.3 98.4 — 72.3 28.3
Ventura County 99.4 99.8 99.3 60.8 99.7 85.8 42.4 0 52 44.1 1.4 — 8.6 70.2 80.1 98 33.9 44.6 —
Fresno County 99.3 98.4 98.7 — 99.2 97.9 57.1 — 95.5 15.6 17.7 — 0 84.7 100 98.1 54.5 — 54.1
San Mateo County 99.2 92 98.4 91.8 99.7 91.6 30.6 — 11.4 20.6 3.4 — 0 68.2 92.1 99.7 — 70.8 —
Sonoma County 99.1 98.2 99.2 68.6 99.5 88.8 15.4 — 16.1 13.6 8.1 — 0 58.7 99.3 99.8 10.8 26.2 85
Santa Barbara County 99 99.2 98.6 51.4 99.4 75.4 5.4 0 22.1 13 1.4 — 2.2 55.4 99.8 100 30.7 38.5 —
Kern County 98.9 99.7 98.5 — 99.4 99.5 19.8 — 67.7 46 82.2 — 3.9 85 94.5 98.5 46.8 — 59.6
Monterey County 98.7 98.7 97.3 59.8 99.4 95.8 28.7 — 33.5 11.4 5.8 — 0 63.7 100 99.9 30.8 46.2 —
San Joaquin County 98.6 92 97.7 — 99.3 97.4 49 — 54.7 38 42.4 — 0 93.4 99.9 62 2.2 — 79.8
Sacramento County 98.1 95.9 99 0 98.9 96.1 65 — 53.9 7.6 6.6 — 0 63.3 99.4 79.4 — — 79.2
Santa Cruz County 97.8 97.3 96.2 49.2 99.3 86.6 18.7 — 33.2 7 31.7 — 0 59.2 99.4 99.3 3.1 73.8 —
Solano County 97 94.5 97.4 82.8 99 77 34.1 — 18.1 17.7 4.3 — 0 60.3 99.3 98.4 1.5 15.4 70
Tulare County 97 98 98.1 — 97.9 99.2 30.3 — 92.5 26.9 24.1 — 0 94.9 88.6 97.9 89.9 — 73.3
Merced County 96.9 92.2 94.7 — 98.5 97.7 26.2 — 67.1 20.4 19.6 — 0 84.6 99.9 54.7 3.4 — 50.2
Stanislaus County 96.9 95 96 — 98.5 96.3 27.8 — 52.2 28.3 36.8 — 0 91 99.8 86.7 5.7 — 78.2
Humboldt County 96.8 95.5 94.2 87.8 99 47.3 7.9 — 15.3 3.9 10.5 — 0 32.9 78.5 99.6 47.2 93.8 0
Imperial County 96.5 76 94.1 — 99.2 94 11.4 22.3 20.2 54.7 1.1 — 0 16 69.2 41.2 — — 86
Madera County 96.4 99.4 94 — 96.9 97.8 19.3 — 76.4 20.4 68 — 0 72.8 99.9 97.8 34.5 — 62.9
Marin County 96.4 94.6 96.5 97.2 98.7 74.6 18.6 — 3.7 11.2 4 — 0 34.1 51.6 99.2 — 69.2 63.5
San Luis Obispo County 95.9 98.3 96.7 50 97.9 78.7 6.1 — 14 4.8 2.6 — 0 25.4 99.6 99.4 5.4 63.1 —
Napa County 95.3 96 95.8 68.2 98.4 66.8 18.3 — 8.5 8.3 4.2 — 0 30.2 99.5 98.7 9.2 3.1 60.3
Del Norte County 94.4 85.7 77.8 42.4 94.2 14.9 3.3 — 4.4 3.8 9.6 — 0 12.4 40 98.6 40.1 98.5 —
Mendocino County 94.3 97.8 95.1 54.4 98.3 52.4 10.5 — 8 1.1 22.5 — 0 29.4 97.4 99.6 31.7 32.3 77.2
Butte County 93.9 98.5 93.2 — 97.5 82 28.2 — 34 12.1 25.9 — 0 68.1 99.7 97.6 27.8 — 79.5
Shasta County 93.4 99.5 94.8 — 96.5 85.7 15.4 — 17 8 70.7 — 2.7 66.8 76.1 92.4 40.9 — 94.8
Placer County 93.1 98.7 95.8 — 95.2 68.8 23.3 — 25.8 21.8 47.7 — 0 81.9 87.3 85.5 97.8 — 67.4
Lake County 93 99.1 94.1 — 97 52.6 10.9 — 3.5 1.8 26.7 — 0 22.1 95.9 98.8 89.3 — 96.7
Kings County 92.4 77.1 87.7 — 97 97.9 16.4 — 66 11 2.7 — 0 48.2 99.7 57.7 0.1 — —
El Dorado County 91.4 99.7 91.7 — 91.6 68 13.7 — 18.9 18.7 85.4 — 0 69 77.1 97 85.8 — 60.6
Yolo County 91.4 87 89.6 — 97.4 78.6 22.4 — 11.3 8.6 1.8 — 0 44.3 99.6 86.2 7.5 — 62.2
Nevada County 89.9 99.4 89.9 — 92.1 57.8 17.9 — 49.3 13.7 69.6 — 0 70.5 0 95.5 89.5 — 58
Siskiyou County 89 98.6 90.9 — 88.2 77.8 1.9 — 19.8 5.8 74.5 — 6.6 35.3 98.9 91.1 83.2 — 98
Tehama County 88.9 98.5 90 — 94.3 57.2 12.9 — 9.2 4 2.3 — 0 39.6 98.8 98.3 28.2 — 92.5
Calaveras County 86.6 99.5 77.6 — 76.7 84.1 8 — 7.4 9.8 91.6 — 0 56.1 98.3 96.6 35.1 — 59.3
Mariposa County 86.4 99 70.8 — 67.5 98.4 6.4 — 6.6 10.8 77.1 — 0 69.2 75.5 99.5 40.5 — 58.6
Plumas County 86.4 98.6 87.9 — 92.2 27.1 9.8 — 12.4 6.4 65.2 — 0 80.4 57.5 88.9 43.4 — 88.9
San Benito County 85.2 95.4 69.4 — 97.3 59.9 10.2 — 3.8 1.7 1.6 — 0 12.5 97 97.7 8.2 — —
Tuolumne County 85.2 99.3 81 — 71 89 7.9 — 10.3 14.1 64.4 — 0 73.5 74.1 91.2 58.9 — 61.6
Sutter County 83.7 77.1 71.4 — 94.1 80.1 14.9 — 9.5 6.6 5.6 — 0 49.6 99.6 47.2 — — 59
Colusa County 81.1 89.1 37.9 — 90.8 65.4 9.3 — 6.2 4 1.6 — 0 16.2 99.7 70.6 9.4 — 39.4
Yuba County 80.9 96.8 83.8 — 90.1 54.1 14.9 — 7.4 4.6 9.5 — 0 40 99 89.1 22.7 — 56
Trinity County 79.5 98.5 79 — 85 39.8 4.7 — 5.3 1.5 7.8 — 0 11.3 0 98.7 54.8 — 55.7
Inyo County 79.3 83.7 61.6 — 94.3 97.8 2.9 — 1.4 2 49.7 — 2.3 33.9 23.4 82.7 96.5 — 66.4
Amador County 79.2 98.1 70 — 64.5 77.3 6 — 7 5.7 86.8 — 0 52.8 99.1 94.3 91.7 — 46.9
Glenn County 74.4 91.8 42.3 — 92.5 74.8 8.8 — 6 2.8 1.3 — 0 19.9 99.5 86.7 14.9 — 51.5
Lassen County 73.1 97.5 74.4 — 89.7 24.2 3.2 — 6.3 5.8 82.7 — 2.5 33.8 83.6 51 26.3 — 87
Mono County 46.5 91.2 46.9 — 89 23.4 2.5 — 3.2 9.9 84.7 — 2.4 27.2 78.1 74.9 86.4 — 88.3
Modoc County 39.7 92.9 44.8 — 68.8 29.8 1.1 — 3.6 1.5 34.6 — 9.7 9.9 96.5 33.3 30.6 — 81.4
Sierra County 31.5 95.6 37.7 — 66.8 7.5 2.4 — 3.4 2.4 33.2 — 0 77.6 35.9 94.6 44.9 — 45.9
Alpine County 10.6 89.1 11.2 — 53 4.6 1.1 — 1.3 3.6 49.9 — 0 3.1 0 66.5 91.1 — 15.3

Source: FEMA National Risk Index v1.20.0, December 2025. Scores are percentile rankings among all US counties — see the methodology page for definitions.