Stevenson Ranch, CA
Stevenson Ranch, CA's wildfire risk, in USFS's own numbers
USFS scores Stevenson Ranch at the 98th national percentile for wildfire risk to structures (in USFS's highest wildfire-risk band nationally), a figure built from 5,007 real buildings rather than raw vegetation cover. (Source: USFS's Wildfire Risk to Communities methodology.)
Separately from the risk score above, Stevenson Ranch's burn probability — fire likelihood with no building count factored in — sits at the 97th percentile nationally.
Stevenson Ranch's building exposure, zone by zone
USFS puts 94.1% of Stevenson Ranch's 5,007 buildings in the Indirect exposure zone, versus 5.9% Direct and 0% Minimal — a place where the fire doesn't need to reach the structure directly for embers to. At 5,007 buildings, this is a substantial built environment, so the shares below describe a real population of structures, not a handful of edge cases.
Where Stevenson Ranch ranks
Stevenson Ranch scores 98th nationally and 83rd within California — close enough that its state context doesn't change the picture the national number already gives. Among the 31,521 US communities USFS scores, Stevenson Ranch ranks 660 for wildfire risk (1 is highest) and 3,427 by building count (1 is largest). Within California alone, it ranks 273 of 1,570 places by risk. See the full county-by-county picture for California on its state page.
Stevenson Ranch and the insurance market
Because Stevenson Ranch 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 94.1% of Stevenson Ranch'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 Stevenson Ranch's figures come from
Stevenson Ranch's 98th-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 Stevenson Ranch's dominant indirect exposure actually means, with real examples from across the dataset.