Bostonia, CA
Bostonia, CA's wildfire risk, in USFS's own numbers
Out of every US place USFS scores, Bostonia lands at the 82nd percentile for wildfire risk to structures — in USFS's highest wildfire-risk band nationally — a figure built from its 4,372 buildings, not the land around them. (Source: USFS's Wildfire Risk to Communities methodology.)
Fire likelihood alone (USFS's burn-probability figure) ranks Bostonia at the 80th national percentile — 1 points below its risk-to-structures score, a gap driven by how much is actually built there.
Where Bostonia's buildings actually sit
Most of Bostonia's buildings (94.1% of 4,372) fall outside USFS's Direct and Indirect zones entirely — that doesn't zero out the score above, it means the risk is regional, not structure-by-structure.
How Bostonia compares
Inside California, Bostonia sits at just the 43rd percentile even though it scores 82nd 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, Bostonia ranks 5,821 for wildfire risk (1 is highest) and 3,906 by building count (1 is largest). Within California alone, it ranks 897 of 1,570 places by risk. See the full county-by-county picture for California on its state page.
Shopping for coverage in Bostonia
Because Bostonia 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
Even with 94.1% of Bostonia outside USFS's Direct and Indirect zones, basic hardening — gutter maintenance, ember-resistant vents — is inexpensive relative to the regional burn-probability risk noted above. Details in the home-hardening guide.
Where Bostonia's figures come from
Every one of the two percentiles behind Bostonia's 5,821-place national rank traces to USFS's Wildfire Risk to Communities dataset — see the methodology guide. The exposure-zones guide covers what Bostonia's dominant minimal exposure actually means, with real examples from across the dataset.