Marietta, IL
How exposed is Marietta to wildfire?
USFS's Wildfire Risk to Communities model puts Marietta at the 22nd national percentile for risk to structures, close to the middle of USFS's national wildfire-risk range — a score built from 96 actual buildings. (Source: USFS's Wildfire Risk to Communities methodology.)
USFS's separate burn-probability score — fire likelihood alone, before counting what's built there — puts Marietta at the 23rd percentile, close to its 22nd-percentile risk score.
Marietta's building exposure, zone by zone
76% of Marietta's 96 buildings fall in USFS's Indirect exposure zone — ember cast rather than direct flame — against 24% Direct and 0% Minimal. Vent screens and roofing material matter more here than lot clearing alone.
Marietta against the rest of the country
Within Illinois, Marietta ranks higher (66th percentile) than it does nationally (22nd) — one of the more fire-exposed places in a state that, overall, scores lower than that. Among the 31,521 US communities USFS scores, Marietta ranks 24,544 for wildfire risk (1 is highest) and 29,224 by building count (1 is largest). Within Illinois alone, it ranks 494 of 1,445 places by risk. See the full county-by-county picture for Illinois on its state page.
What this risk score means for insurance
Marietta's moderate wildfire rating (22nd percentile) isn't the kind of score driving the carrier pullback making news in the highest-risk Western markets — but a standard homeowners quote is still worth comparing on its own terms.
What would actually reduce this score
Marietta's 76% Indirect-exposure share points at embers, not flame contact, as the main pathway — ember-resistant vents and non-combustible roofing rank ahead of defensible space here. Detail in the home-hardening guide.
Where Marietta's figures come from
Marietta's 22nd-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 Marietta's dominant indirect exposure actually means, with real examples from across the dataset.