Big Rock, IL
Big Rock wildfire risk explained
Big Rock sits at the 11th percentile nationally for wildfire risk to structures — among the lower wildfire-risk places nationally — per USFS's Wildfire Risk to Communities model, built from its 745 counted buildings, not vegetation cover alone. (Source: USFS's Wildfire Risk to Communities methodology.)
Separately from the risk score above, Big Rock's burn probability — fire likelihood with no building count factored in — sits at the 11th percentile nationally.
Where Big Rock's buildings actually sit
USFS puts 39.6% of Big Rock's 745 buildings in the Indirect exposure zone, versus 36.4% Direct and 24% Minimal — a place where the fire doesn't need to reach the structure directly for embers to.
Big Rock against the rest of the country
Within Illinois, Big Rock ranks higher (45th percentile) than it does nationally (11th) — one of the more fire-exposed places in a state that, overall, scores lower than that. Among the 31,521 US communities USFS scores, Big Rock ranks 27,977 for wildfire risk (1 is highest) and 14,172 by building count (1 is largest). Within Illinois alone, it ranks 790 of 1,445 places by risk. See the full county-by-county picture for Illinois on its state page.
Big Rock and the insurance market
At the 11th national percentile, Big Rock rates low for wildfire risk — well short of the threshold where insurers have been withdrawing coverage, though comparing a quote costs nothing either way.
Hardening a home in Big Rock
Because 39.6% of Big Rock'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 Big Rock's figures come from
Big Rock's 11th-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 Big Rock's dominant indirect exposure actually means, with real examples from across the dataset.