South Monrovia Island, CA
How exposed is South Monrovia Island to wildfire?
South Monrovia Island sits at the 57th percentile nationally for wildfire risk to structures — modestly above the national average for wildfire risk — per USFS's Wildfire Risk to Communities model, built from its 2,060 counted buildings, not vegetation cover alone. (Source: USFS's Wildfire Risk to Communities methodology.)
Fire likelihood alone (USFS's burn-probability figure) ranks South Monrovia Island at the 61st national percentile — 3 points above its risk-to-structures score, a gap driven by how much is actually built there.
Where South Monrovia Island's buildings actually sit
USFS classifies 99.9% of South Monrovia Island's buildings as Minimal exposure, the largest of the three zones here by a wide margin over 0.2% Direct and 0% Indirect — a landscape-level risk rather than a building-by-building one.
Where South Monrovia Island ranks
South Monrovia Island ranks lower within California (15th percentile statewide) than its 57th national percentile suggests alone — a calmer spot in a state where wildfire risk generally runs high. Among the 31,521 US communities USFS scores, South Monrovia Island ranks 13,454 for wildfire risk (1 is highest) and 7,312 by building count (1 is largest). Within California alone, it ranks 1,331 of 1,570 places by risk. See the full county-by-county picture for California on its state page.
Shopping for coverage in South Monrovia Island
South Monrovia Island's 57th-percentile score lands in California, the only two states requiring a wildfire disclosure at sale. California's surplus-lines homeowners market passed 300,000 policies for the first time in 2025, driven by carriers pulling back from wildfire-exposed areas statewide. The disclosure-law guide covers what it requires.
What would actually reduce this score
With 99.9% of buildings rated Minimal exposure, South Monrovia Island gets less benefit from structure hardening than a Direct- or Indirect-dominant place would — the home-hardening guide explains why the zone matters.
More on how this number was built
South Monrovia Island's 57th-percentile score and its burn-probability figure both come from the same USFS workbook, documented in the methodology guide. For more on what minimal exposure implies beyond South Monrovia Island, see the exposure-zones guide.