Castle Hill, CA
How exposed is Castle Hill to wildfire?
Castle Hill's 566 buildings earn a 78th-percentile wildfire-risk score nationally under USFS's model — well above the national norm for wildfire risk. (Source: USFS's Wildfire Risk to Communities methodology.)
USFS's separate burn-probability score — fire likelihood alone, before counting what's built there — puts Castle Hill at the 79th percentile, close to its 78th-percentile risk score.
Castle Hill's building exposure, zone by zone
Of Castle Hill's 566 counted buildings, 57.1% 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.
Castle Hill against the rest of the country
Castle Hill ranks lower within California (37th percentile statewide) than its 78th national percentile suggests alone — a calmer spot in a state where wildfire risk generally runs high. Among the 31,521 US communities USFS scores, Castle Hill ranks 7,018 for wildfire risk (1 is highest) and 16,304 by building count (1 is largest). Within California alone, it ranks 988 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
Castle Hill 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 78th-percentile score like Castle Hill's can end up mattering for. More on the disclosure law.
What would actually reduce this score
Because Direct exposure dominates in Castle Hill (57.1%), the highest-leverage fix is defensible space, not roofing or vents alone — covered in the home-hardening guide.
Where Castle Hill's figures come from
Every one of the two percentiles behind Castle Hill's 7,018-place national rank traces to USFS's Wildfire Risk to Communities dataset — see the methodology guide. The exposure-zones guide covers what Castle Hill's dominant direct exposure actually means, with real examples from across the dataset.