Vacaville, CA
How exposed is Vacaville to wildfire?
USFS scores Vacaville at the 91st national percentile for wildfire risk to structures (in USFS's highest wildfire-risk band nationally), a figure built from 32,035 real buildings rather than raw vegetation cover. (Source: USFS's Wildfire Risk to Communities methodology.)
USFS's separate burn-probability score — fire likelihood alone, before counting what's built there — puts Vacaville at the 91st percentile, close to its 91st-percentile risk score.
Vacaville's building exposure, zone by zone
Most of Vacaville's buildings (61.3%) 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. At 32,035 buildings, this is a substantial built environment, so the shares below describe a real population of structures, not a handful of edge cases.
Where Vacaville ranks
Vacaville's 91st national percentile looks worse in isolation than its 63rd ranking inside California does — this place is on the milder end for its own state, by 28 points. Among the 31,521 US communities USFS scores, Vacaville ranks 2,986 for wildfire risk (1 is highest) and 347 by building count (1 is largest). Within California alone, it ranks 590 of 1,570 places by risk. See the full county-by-county picture for California on its state page.
Shopping for coverage in Vacaville
Vacaville 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 91st-percentile score like Vacaville's can end up mattering for. More on the disclosure law.
What would actually reduce this score
Because 61.3% of Vacaville's buildings sit in the Indirect zone, sealing the ember pathway (vents, roofing, gutters) is the intervention this page's data actually supports — see the home-hardening guide.
Where Vacaville's figures come from
Every one of the two percentiles behind Vacaville's 2,986-place national rank traces to USFS's Wildfire Risk to Communities dataset — see the methodology guide. The exposure-zones guide covers what Vacaville's dominant indirect exposure actually means, with real examples from across the dataset.