Walnut Grove, CA
How exposed is Walnut Grove to wildfire?
Walnut Grove sits at the 64th percentile nationally for wildfire risk to structures — well above the national norm for wildfire risk — per USFS's Wildfire Risk to Communities model, built from its 936 counted buildings, not vegetation cover alone. (Source: USFS's Wildfire Risk to Communities methodology.)
USFS's separate burn-probability score — fire likelihood alone, before counting what's built there — puts Walnut Grove at the 64th percentile, close to its 64th-percentile risk score.
What "at risk" means for the buildings here
936 buildings are counted in Walnut Grove, and 35.2% of them are Indirect exposure — ember-driven risk rather than the 34.5% in Direct exposure or the 30.3% rated Minimal.
Walnut Grove against the rest of the country
Inside California, Walnut Grove sits at just the 23rd percentile even though it scores 64th 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, Walnut Grove ranks 11,303 for wildfire risk (1 is highest) and 12,420 by building count (1 is largest). Within California alone, it ranks 1,217 of 1,570 places by risk. See the full county-by-county picture for California on its state page.
Shopping for coverage in Walnut Grove
Because Walnut Grove is in California, a wildfire-hazard disclosure is legally required before a sale closes here — unusual nationally, since only these two states mandate it. The state's FAIR Plan alone carried 668,609 policies by the end of 2025. Full detail in the disclosure-law guide.
What would actually reduce this score
Because 35.2% of Walnut Grove'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 Walnut Grove's figures come from
Walnut Grove's 64th-percentile score and its burn-probability figure both come from the same USFS workbook, documented in the methodology guide. The exposure-zones guide covers what Walnut Grove's dominant indirect exposure actually means, with real examples from across the dataset.