Willowbrook, CA
How exposed is Willowbrook to wildfire?
Willowbrook sits at the 28th percentile nationally for wildfire risk to structures — close to the middle of USFS's national wildfire-risk range — per USFS's Wildfire Risk to Communities model, built from its 5,976 counted buildings, not vegetation cover alone. (Source: USFS's Wildfire Risk to Communities methodology.)
Separately from the risk score above, Willowbrook's burn probability — fire likelihood with no building count factored in — sits at the 35th percentile nationally.
What "at risk" means for the buildings here
Willowbrook rates 99.9% Minimal exposure against just 0.1% Direct and 0% Indirect — of 5,976 buildings counted, few sit close enough to burnable vegetation for USFS to flag them individually. At 5,976 buildings, this is a substantial built environment, so the shares below describe a real population of structures, not a handful of edge cases.
How Willowbrook compares
Willowbrook's 28th national percentile looks worse in isolation than its 3rd ranking inside California does — this place is on the milder end for its own state, by 25 points. Among the 31,521 US communities USFS scores, Willowbrook ranks 22,712 for wildfire risk (1 is highest) and 2,883 by building count (1 is largest). Within California alone, it ranks 1,530 of 1,570 places by risk. See the full county-by-county picture for California on its state page.
Willowbrook and the insurance market
Willowbrook's 28th-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
Willowbrook's 99.9% Minimal-exposure share means structure-level hardening matters less here than it would elsewhere — still worth the low-cost basics, per the home-hardening guide.
More on how this number was built
Every one of the two percentiles behind Willowbrook's 22,712-place national rank traces to USFS's Wildfire Risk to Communities dataset — see the methodology guide. For more on what minimal exposure implies beyond Willowbrook, see the exposure-zones guide.