Oak Brook, IL
How exposed is Oak Brook to wildfire?
USFS's Wildfire Risk to Communities model puts Oak Brook at the 27th national percentile for risk to structures, close to the middle of USFS's national wildfire-risk range — a score built from 3,565 actual buildings. (Source: USFS's Wildfire Risk to Communities methodology.)
Fire likelihood alone (USFS's burn-probability figure) ranks Oak Brook at the 31st national percentile — 4 points above its risk-to-structures score, a gap driven by how much is actually built there.
What "at risk" means for the buildings here
Only 14.9% of Oak Brook's 3,565 buildings carry Direct exposure and 0% carry Indirect; the remaining 85.1% are Minimal, which shifts the risk driving this page's score toward the surrounding landscape rather than any one structure.
Where Oak Brook ranks
Compare Oak Brook's two percentiles: 75th within Illinois, only 27th nationally — a gap of 48 points that marks it as unusually exposed for its own state. Among the 31,521 US communities USFS scores, Oak Brook ranks 23,058 for wildfire risk (1 is highest) and 4,698 by building count (1 is largest). Within Illinois alone, it ranks 360 of 1,445 places by risk. See the full county-by-county picture for Illinois on its state page.
Oak Brook and the insurance market
Oak Brook's moderate wildfire rating (27th 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
With 85.1% of buildings rated Minimal exposure, Oak Brook gets less benefit from structure hardening than a Direct- or Indirect-dominant place would — the home-hardening guide explains why the zone matters.
Where Oak Brook's figures come from
Every one of the two percentiles behind Oak Brook's 23,058-place national rank traces to USFS's Wildfire Risk to Communities dataset — see the methodology guide. The exposure-zones guide covers what Oak Brook's dominant minimal exposure actually means, with real examples from across the dataset.