Bannock County, ID
FEMA National Risk Index scores, disaster declarations & hazard data
Bannock County has experienced 5 federally declared disasters since 1965, most recently Covid-19 in 2020. Its overall natural hazard risk is rated Relatively Low — lower risk than most US counties.
Bannock County's highest-rated hazards are wildfire, winter weather, and cold wave, with its top risk rated "Relatively Moderate" by FEMA's National Risk Index. NOAA records 34 storm events in the county over the past decade.
Past disasters & FEMA designations
A federal disaster declaration officially designates a county for FEMA disaster assistance. Bannock County has been designated in 5 declarations since 1965, covering 4 disaster types including biological (2), hurricane (1), fire (1).
| Year | Type | Event name |
|---|---|---|
| 2020 | Biological | Covid-19 Pandemic |
| 2020 | Biological | Covid-19 |
| 2005 | Hurricane | Hurricane Katrina |
| 2000 | Fire | Wildfires |
| 1965 | Flood | Heavy Rains & Flooding |
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 Moderate | 96.9 | 0 | 0 | — |
| Inland Flooding | Relatively Low | 51.9 | 13 | 0 | $653K |
| Coastal Flooding | Not Applicable | — | 0 | 0 | — |
| Earthquake | Relatively Low | 82.8 | 1 | — | — |
| Heat Wave | Relatively Moderate | 79 | 0 | 0 | — |
| Tornado | Very Low | 15.1 | 0 | 0 | — |
| Hurricane | Not Applicable | — | 0 | 0 | — |
| Hail | Relatively Low | 40.3 | 18 | 0 | — |
| Strong Wind | Very Low | 12.9 | 0 | 0 | — |
| Winter Weather | Relatively High | 96.1 | 0 | 0 | — |
| Ice Storm | Very Low | 20.3 | — | — | — |
| Cold Wave | Relatively Moderate | 88.6 | — | — | — |
| Lightning | Relatively Moderate | 80 | 3 | 0 | $21K |
| Drought | Very Low | 16.2 | 0 | 0 | — |
| Landslide | Very Low | 58.4 | 0 | 0 | — |
| Avalanche | Very Low | 23 | — | — | — |
| Tsunami | Not Applicable | — | — | — | — |
| Volcanic Activity | Very Low | 68.1 | — | — | — |
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
Bannock County ranks in the 50th percentile (Moderate) 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 | 50th | Moderate |
| Socioeconomic status | 44th | Low |
| Household characteristics | 43rd | Low |
| Racial & ethnic minority status | 49th | Low |
| Housing type & transportation | 61st | Moderate |
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 | 99th | Very High |
| Risk to homes | 99th | Very High |
| Buildings in direct exposure zone | 28.9% | — |
NOAA tracked 34 weather events in this county over 2016–2025: 16 in 2016–20 vs 18 in 2021–25 (+13% — 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 Bannock County?
According to the FEMA National Risk Index, the highest-risk hazards in Bannock County, Idaho are wildfire, winter weather, and cold wave. The county's overall natural hazard risk is rated Relatively Low — lower risk than most US counties.
Has Bannock County received federal disaster declarations?
Yes. Bannock County has received 5 federal disaster declarations since 1965, including declarations in 2020. The most common disaster type on record is biological (2 declarations).
Has Bannock County had any FEMA disaster declarations in 2024, 2025, or 2026?
No federal disaster declarations have been recorded for Bannock County since the start of 2024. Its most recent declaration on record is Covid-19 in 2020.
How does Bannock County's natural hazard risk compare to nearby counties?
Among neighboring counties, Bingham County, ID has the highest overall natural hazard risk (Relatively Low) and Oneida County, ID has the lowest (Very Low). Bannock County is rated Relatively Low overall.
How is Bannock County's composite disaster risk index calculated?
Bannock 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. Bannock County's composite score of 67 means its overall natural hazard risk is higher than 67% of US counties.