San Andreas, CA
San Andreas, CA's wildfire risk, in USFS's own numbers
USFS's Wildfire Risk to Communities model puts San Andreas at the 97th national percentile for risk to structures, in USFS's highest wildfire-risk band nationally — a score built from 1,882 actual buildings. (Source: USFS's Wildfire Risk to Communities methodology.)
Fire likelihood alone (USFS's burn-probability figure) ranks San Andreas at the 97th national percentile — 0 points below its risk-to-structures score, a gap driven by how much is actually built there.
What "at risk" means for the buildings here
Most of San Andreas's buildings (52.4%) sit in the Indirect zone, where wind-blown embers rather than flame front are the mechanism USFS is scoring — ember-resistant vents and non-combustible roofing are the interventions this pattern favors, more than defensible space alone.
San Andreas against the rest of the country
Inside California, San Andreas sits at just the 80th percentile even though it scores 97th 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, San Andreas ranks 875 for wildfire risk (1 is highest) and 7,817 by building count (1 is largest). Within California alone, it ranks 313 of 1,570 places by risk. See the full county-by-county picture for California on its state page.
San Andreas and the insurance market
San Andreas's 97th-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.
What would actually reduce this score
San Andreas's 52.4% Indirect-exposure share points at embers, not flame contact, as the main pathway — ember-resistant vents and non-combustible roofing rank ahead of defensible space here. Detail in the home-hardening guide.
More on how this number was built
San Andreas's 97th-percentile score and its burn-probability figure both come from the same USFS workbook, documented in the methodology guide. For more on what indirect exposure implies beyond San Andreas, see the exposure-zones guide.