Alleghany, CA
Alleghany, CA's wildfire risk, in USFS's own numbers
USFS's Wildfire Risk to Communities model puts Alleghany at the 100th national percentile for risk to structures, in USFS's highest wildfire-risk band nationally — a score built from 45 actual buildings. (Source: USFS's Wildfire Risk to Communities methodology.)
Separately from the risk score above, Alleghany'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 Alleghany's 45 counted buildings, 100% 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.
Alleghany against the rest of the country
Alleghany scores 100th nationally and 99th within California — close enough that its state context doesn't change the picture the national number already gives. Among the 31,521 US communities USFS scores, Alleghany ranks 21 for wildfire risk (1 is highest) and 31,040 by building count (1 is largest). Within California alone, it ranks 10 of 1,570 places by risk. See the full county-by-county picture for California on its state page.
Alleghany and the insurance market
Alleghany sits in California, one of two states that legally require a wildfire-risk disclosure at sale. California's FAIR Plan, the state's insurer of last resort, ended 2025 with 668,609 residential policies after adding 21,859 in Q4 alone — the kind of market shift a 100th-percentile score like Alleghany's can end up mattering for. More on the disclosure law.
What would actually reduce this score
Alleghany's 100% Direct-exposure share means lot clearing around the structure typically outweighs any single material upgrade here. The home-hardening guide ranks the options for a place shaped like this.
Where Alleghany's figures come from
Every one of the two percentiles behind Alleghany's 21-place national rank traces to USFS's Wildfire Risk to Communities dataset — see the methodology guide. The exposure-zones guide covers what Alleghany's dominant direct exposure actually means, with real examples from across the dataset.