Natural disaster risk in Oregon, by county
All 36 counties in Oregon, ranked by FEMA's National Risk Index composite risk score, with each one's highest-rated hazard. Other states
At a glance
Highest overall risk: Multnomah County (relatively high, score 98.5). Lowest: Gilliam County (very low, score 2.7).
Top hazards in Oregon
| Hazard | Counties rated relatively high or very high | Average score |
|---|---|---|
| Ice storm | 8 of 36 | 46.3 |
| Winter weather | 7 of 36 | 54.4 |
| Earthquake | 6 of 36 | 78.3 |
| Wildfire | 5 of 36 | 78.1 |
| Inland (riverine) flooding | 5 of 36 | 63.1 |
All counties, highest risk first
| # | County | Overall risk | Highest-rated hazard |
|---|---|---|---|
| 1 | Multnomah County | Relatively high 98.5 | Earthquake (relatively high) |
| 2 | Lane County | Relatively high 96.4 | Earthquake (relatively high) |
| 3 | Washington County | Relatively high 96 | Earthquake (relatively high) |
| 4 | Marion County | Relatively high 95.5 | Earthquake (relatively high) |
| 5 | Clatsop County | Relatively high 95.1 | Coastal flooding (very high) |
| 6 | Clackamas County | Relatively high 94.9 | Earthquake (relatively high) |
| 7 | Douglas County | Relatively moderate 92.9 | Wildfire (relatively high) |
| 8 | Jackson County | Relatively moderate 92.5 | Winter weather (very high) |
| 9 | Coos County | Relatively moderate 91.9 | Earthquake (relatively high) |
| 10 | Josephine County | Relatively moderate 90.2 | Wildfire (relatively high) |
| 11 | Lincoln County | Relatively moderate 89.9 | Ice storm (relatively high) |
| 12 | Linn County | Relatively moderate 88.1 | Strong wind (relatively high) |
| 13 | Curry County | Relatively moderate 86.5 | Tsunami (relatively high) |
| 14 | Deschutes County | Relatively moderate 84.9 | Wildfire (relatively high) |
| 15 | Benton County | Relatively moderate 84.4 | Earthquake (relatively moderate) |
| 16 | Yamhill County | Relatively moderate 82.9 | Earthquake (relatively moderate) |
| 17 | Umatilla County | Relatively moderate 82.3 | Cold wave (relatively high) |
| 18 | Tillamook County | Relatively moderate 81.3 | Earthquake (relatively moderate) |
| 19 | Klamath County | Relatively low 77.9 | Winter weather (relatively high) |
| 20 | Polk County | Relatively low 72.8 | Earthquake (relatively moderate) |
| 21 | Columbia County | Relatively low 70.7 | Earthquake (relatively moderate) |
| 22 | Wasco County | Relatively low 67.8 | Wildfire (relatively high) |
| 23 | Baker County | Relatively low 48.2 | Avalanche (relatively high) |
| 24 | Union County | Relatively low 43.5 | Wildfire (relatively moderate) |
| 25 | Malheur County | Very low 34.8 | Wildfire (relatively moderate) |
| 26 | Wallowa County | Very low 34 | Avalanche (relatively high) |
| 27 | Crook County | Very low 33.6 | Wildfire (relatively moderate) |
| 28 | Grant County | Very low 32.1 | Wildfire (relatively moderate) |
| 29 | Hood River County | Very low 32.1 | Ice storm (relatively high) |
| 30 | Jefferson County | Very low 29.9 | Wildfire (relatively moderate) |
| 31 | Morrow County | Very low 26.4 | Wildfire (relatively moderate) |
| 32 | Harney County | Very low 23.7 | Wildfire (relatively moderate) |
| 33 | Lake County | Very low 19.1 | Wildfire (relatively moderate) |
| 34 | Wheeler County | Very low 7.2 | Lightning (relatively high) |
| 35 | Sherman County | Very low 2.9 | Wildfire (relatively moderate) |
| 36 | Gilliam County | Very low 2.7 | Wildfire (relatively low) |
How to read these ratings
- Ratings run in five steps: very low, relatively low, relatively moderate, relatively high and very high. They compare a county with every other US county; they are not a measure of danger on their own.
- Scores run from 0 to 100 and are national percentiles. The bar shows the score: a score of 80 means a higher value than 80% of US counties.
- Overall risk combines the expected annual loss with social vulnerability and community resilience.
- Expected annual loss is the average yearly loss to buildings, people and agriculture the model expects from all 18 hazards.
- Social vulnerability describes how hard it may be for people to prepare for and recover from a disaster. Higher is worse.
- Community resilience describes a community's ability to prepare, adapt and recover. Higher is better.
- "Not applicable" means FEMA does not model that hazard there (for example, hurricanes far inland).
About this data
Source: FEMA National Risk Index, version 1.20, released December 2025, published by the Federal Emergency Management Agency (US public domain). About the National Risk Index. The index is a model of relative risk built from historical hazard records, what is exposed and community factors. It is not a forecast, it does not describe any single property, and it is not insurance or financial advice. For decisions about a specific address, check FEMA's flood maps and your local emergency management office.
Questions
Which county in Oregon has the highest natural disaster risk?
Multnomah County has the highest composite risk score in Oregon in FEMA's National Risk Index: 98.5, rated relatively high.
Which county in Oregon has the lowest natural disaster risk?
Gilliam County has the lowest composite risk score in Oregon: 2.7, rated very low. A low score means lower modelled risk compared with other US counties, not no risk.
What natural disasters is Oregon most at risk from?
Across Oregon, the hazards rated highest in the most counties are ice storm, winter weather, earthquake, according to FEMA's National Risk Index. Each county page lists all 18 hazards.
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