Coos County, OR
FEMA National Risk Index scores, disaster declarations & hazard data
Coos County has experienced 20 federally declared disasters since 1965, most recently Severe Storms, Flooding, Landslides, And Mudslides in 2025. Its overall natural hazard risk is rated Relatively Moderate — near the middle compared to other US counties.
Coos County's highest-rated hazards are earthquake, landslide, and coastal flooding, with its top risk rated "Relatively High" by FEMA's National Risk Index. NOAA records 36 storm events in the county over the past decade. Community vulnerability is elevated (77th percentile nationally), suggesting residents may face greater difficulty recovering from major disasters.
Past disasters & FEMA designations
A federal disaster declaration officially designates a county for FEMA disaster assistance. Coos County has been designated in 20 declarations since 1965, covering 7 disaster types including severe storm (8), flood (6), biological (2).
| Year | Type | Event name |
|---|---|---|
| 2025 | Severe Storm | Severe Storms, Flooding, Landslides, And Mudslides |
| 2024 | Severe Storm | Severe Winter Storms, Straight-Line Winds, Landslides, And Mudslides |
| 2020 | Fire | Wildfires And Straight-Line Winds |
| 2020 | Biological | Covid-19 Pandemic |
| 2020 | Biological | Covid-19 |
| 2019 | Severe Storm | Severe Winter Storms, Flooding, Landslides, And Mudslides |
| 2016 | Severe Storm | Severe Winter Storms, Straight-Line Winds, Flooding, Landslides, And Mudslides |
| 2012 | Flood | Severe Winter Storm, Flooding, Landslides, And Mudslides |
| 2011 | Tsunami | Tsunami Wave Surge |
| 2008 | Severe Storm | Severe Storms, Flooding, Landslides, And Mudslides |
Showing the 10 most recent of 20 total declarations since 1965.
Source: FEMA OpenFEMA Disaster Declarations Summaries. A single disaster can produce more than one record per county. Data current through September 2026.
Risk by hazard type
| Hazard | Risk rating | Risk score | Recorded events | Deaths | Prop. damage |
|---|---|---|---|---|---|
| Wildfire | Relatively Low | 64.8 | 0 | 0 | — |
| Inland Flooding | Relatively Moderate | 85.6 | 34 | 0 | — |
| Coastal Flooding | Relatively High | 87.4 | 1 | 0 | — |
| Earthquake | Relatively High | 98.3 | 1 | — | — |
| Heat Wave | Relatively Low | 50.2 | 2 | 1 | — |
| Tornado | Very Low | 4.1 | 0 | 0 | — |
| Hurricane | Not Applicable | — | 0 | 0 | — |
| Hail | Very Low | 3.9 | 0 | 0 | — |
| Strong Wind | Very Low | 6.1 | 0 | 0 | — |
| Winter Weather | Relatively Low | 29.2 | 0 | 0 | — |
| Ice Storm | Very Low | 12.8 | — | — | — |
| Cold Wave | No Rating | 0 | — | — | — |
| Lightning | Relatively Low | 24.9 | 0 | 0 | — |
| Drought | Very Low | 14.1 | 0 | 0 | — |
| Landslide | Relatively Moderate | 96.3 | 0 | 0 | — |
| Avalanche | Very Low | 34.8 | — | — | — |
| Tsunami | Relatively Moderate | 84.6 | — | — | — |
| Volcanic Activity | Not Applicable | — | — | — | — |
Scores are 0–100 percentiles relative to all US counties — higher means more exposed, not that a disaster is likely this year. Event counts: NOAA Storm Events 2016–2026; earthquake counts from USGS ComCat (M3.0+, 1996–2026). See the methodology page for details.
Community vulnerability
Coos County ranks in the 77th percentile (High) for community vulnerability — a measure of how hard disaster impacts tend to hit residents. Higher vulnerability means more displacement, worse health outcomes, and slower recovery after a disaster.
| SVI theme | Percentile | Vulnerability level |
|---|---|---|
| Overall | 77th | High |
| Socioeconomic status | 68th | Moderate |
| Household characteristics | 69th | Moderate |
| Racial & ethnic minority status | 46th | Low |
| Housing type & transportation | 86th | High |
Source: CDC/ATSDR Social Vulnerability Index 2022. Percentiles compare counties nationally — higher means more vulnerable relative to other counties. See CDC SVI for full methodology.
Future risk outlook
| Wildfire metric | National percentile | Level |
|---|---|---|
| Burn probability | 50th | Relatively Moderate |
| Risk to homes | 60th | Relatively High |
| Buildings in direct exposure zone | 46.5% | — |
NOAA tracked 36 weather events in this county over 2016–2025: 17 in 2016–20 vs 19 in 2021–25 (+12% — frequency increasing).
Wildfire: USDA Forest Service Wildfire Risk to Communities (RDS-2020-0016-2) — modeled values, not annual forecasts. See wildfirerisk.org. Inland flood and heat projections pending data availability; coastal sea-level projections are available for select coastal counties below — see the data page.
Nearby counties
Frequently asked questions
What natural hazards pose the greatest risk in Coos County?
According to the FEMA National Risk Index, the highest-risk hazards in Coos County, Oregon are earthquake, landslide, and coastal flooding. The county's overall natural hazard risk is rated Relatively Moderate — near the middle compared to other US counties.
Has Coos County received federal disaster declarations?
Yes. Coos County has received 20 federal disaster declarations since 1965, including declarations in 2025. The most common disaster type on record is severe storm (8 declarations).
Has Coos County had any FEMA disaster declarations in 2024, 2025, or 2026?
Yes. Recent federal disaster declarations for Coos County include Severe Storms, Flooding, Landslides, And Mudslides (2025), Severe Winter Storms, Straight-Line Winds, Landslides, And Mudslides (2024). See the declarations table above for the full history since 1965.
How does Coos County's natural hazard risk compare to nearby counties?
Among neighboring counties, Lane County, OR has the highest overall natural hazard risk (Relatively High) and Benton County, OR has the lowest (Relatively Moderate). Coos County is rated Relatively Moderate overall.
How is Coos County's composite disaster risk index calculated?
Coos County's composite disaster risk index — officially FEMA's National Risk Index (NRI) — scores every US county on a 0–100 percentile scale across 18 natural hazard types, factoring in expected annual loss, social vulnerability, and community resilience. Coos County's composite score of 92 means its overall natural hazard risk is higher than 92% of US counties.