Perris, CA
Perris, CA's wildfire risk, in USFS's own numbers
USFS's Wildfire Risk to Communities model puts Perris at the 89th national percentile for risk to structures, in USFS's highest wildfire-risk band nationally — a score built from 19,821 actual buildings. (Source: USFS's Wildfire Risk to Communities methodology.)
Fire likelihood alone (USFS's burn-probability figure) ranks Perris at the 91st national percentile — 2 points above its risk-to-structures score, a gap driven by how much is actually built there.
Where Perris's buildings actually sit
62.6% of Perris's 19,821 buildings fall in USFS's Indirect exposure zone — ember cast rather than direct flame — against 12.4% Direct and 25% Minimal. Vent screens and roofing material matter more here than lot clearing alone. At 19,821 buildings, this is a substantial built environment, so the shares below describe a real population of structures, not a handful of edge cases.
Perris against the rest of the country
Perris ranks lower within California (59th percentile statewide) than its 89th national percentile suggests alone — a calmer spot in a state where wildfire risk generally runs high. Among the 31,521 US communities USFS scores, Perris ranks 3,491 for wildfire risk (1 is highest) and 715 by building count (1 is largest). Within California alone, it ranks 650 of 1,570 places by risk. See the full county-by-county picture for California on its state page.
Perris and the insurance market
Perris 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 89th-percentile score like Perris's can end up mattering for. More on the disclosure law.
Hardening a home in Perris
Because 62.6% of Perris'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.
More on how this number was built
Perris's 89th-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 Perris, see the exposure-zones guide.