Duncan, IA
Duncan, IA's wildfire risk, in USFS's own numbers
Duncan sits at the 17th 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 84 counted buildings, not vegetation cover alone. (Source: USFS's Wildfire Risk to Communities methodology.)
USFS's separate burn-probability score — fire likelihood alone, before counting what's built there — puts Duncan at the 10th percentile, close to its 17th-percentile risk score.
Where Duncan's buildings actually sit
Only 15.5% of Duncan's 84 buildings carry Direct exposure and 0% carry Indirect; the remaining 84.5% are Minimal, which shifts the risk driving this page's score toward the surrounding landscape rather than any one structure.
Duncan against the rest of the country
There's little gap between Duncan's 17th national percentile and its 27th percentile inside Iowa, which means the state comparison mostly confirms what the national score already shows. Among the 31,521 US communities USFS scores, Duncan ranks 26,217 for wildfire risk (1 is highest) and 29,725 by building count (1 is largest). Within Iowa alone, it ranks 741 of 1,017 places by risk. See the full county-by-county picture for Iowa on its state page.
Duncan and the insurance market
Duncan's low rating (17th percentile nationally) sits outside the range where wildfire risk alone reshapes an insurance market — still, a homeowner here loses nothing by comparing rates.
Hardening a home in Duncan
Duncan's 84.5% Minimal-exposure share means structure-level hardening matters less here than it would elsewhere — still worth the low-cost basics, per the home-hardening guide.
More on how this number was built
Duncan's 17th-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 Duncan, see the exposure-zones guide.