Lewiston, CA
Lewiston, CA's wildfire risk, in USFS's own numbers
Out of every US place USFS scores, Lewiston lands at the 100th percentile for wildfire risk to structures — in USFS's highest wildfire-risk band nationally — a figure built from its 1,110 buildings, not the land around them. (Source: USFS's Wildfire Risk to Communities methodology.)
Separately from the risk score above, Lewiston's burn probability — fire likelihood with no building count factored in — sits at the 100th percentile nationally.
What "at risk" means for the buildings here
Of Lewiston's 1,110 counted buildings, 79.9% carry Direct exposure and only 0% carry Minimal — a lopsided split that puts defensible-space clearing ahead of vents or roofing as the intervention worth doing first.
Lewiston against the rest of the country
Lewiston's risk sits at a similar level relative to California (97th percentile statewide) as it does nationally (100th) — this place isn't unusual for its own state either way. Among the 31,521 US communities USFS scores, Lewiston ranks 61 for wildfire risk (1 is highest) and 11,219 by building count (1 is largest). Within California alone, it ranks 38 of 1,570 places by risk. See the full county-by-county picture for California on its state page.
Lewiston and the insurance market
Lewiston's 100th-percentile score lands in California, the only two states requiring a wildfire disclosure at sale. California's surplus-lines homeowners market passed 300,000 policies for the first time in 2025, driven by carriers pulling back from wildfire-exposed areas statewide. The disclosure-law guide covers what it requires.
Lowering exposure, not just insuring around it
With 79.9% of Lewiston in Direct exposure, defensible-space clearing and ember-resistant construction (vents, Class-A roofing) address the exposure this page's own numbers describe, not a generic checklist. See the home-hardening guide.
More on how this number was built
Every one of the two percentiles behind Lewiston's 61-place national rank traces to USFS's Wildfire Risk to Communities dataset — see the methodology guide. For more on what direct exposure implies beyond Lewiston, see the exposure-zones guide.