Hornbrook, CA
Hornbrook, CA's wildfire risk, in USFS's own numbers
Out of every US place USFS scores, Hornbrook lands at the 89th percentile for wildfire risk to structures — in USFS's highest wildfire-risk band nationally — a figure built from its 237 buildings, not the land around them. (Source: USFS's Wildfire Risk to Communities methodology.)
Fire likelihood alone (USFS's burn-probability figure) ranks Hornbrook at the 91st national percentile — 1 points above its risk-to-structures score, a gap driven by how much is actually built there.
Where Hornbrook's buildings actually sit
99.2% of Hornbrook's 237 buildings sit in USFS's Direct exposure zone, roughly 235 structures close enough to burnable vegetation for flame contact, not just embers — 0.8% fall in the Indirect, ember-only zone and 0% are Minimal.
Where Hornbrook ranks
Inside California, Hornbrook sits at just the 60th percentile even though it scores 89th nationally — the state's overall wildfire exposure is high enough to make this a relatively quiet corner of it. Among the 31,521 US communities USFS scores, Hornbrook ranks 3,330 for wildfire risk (1 is highest) and 23,549 by building count (1 is largest). Within California alone, it ranks 629 of 1,570 places by risk. See the full county-by-county picture for California on its state page.
What this risk score means for insurance
Hornbrook 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 89th-percentile score like Hornbrook's can end up mattering for. More on the disclosure law.
What would actually reduce this score
Because Direct exposure dominates in Hornbrook (99.2%), the highest-leverage fix is defensible space, not roofing or vents alone — covered in the home-hardening guide.
More on how this number was built
Hornbrook's 89th-percentile score and its burn-probability figure both come from the same USFS workbook, documented in the methodology guide. For more on what direct exposure implies beyond Hornbrook, see the exposure-zones guide.