Vienna, MD
Vienna, MD's wildfire risk, in USFS's own numbers
Out of every US place USFS scores, Vienna lands at the 80th percentile for wildfire risk to structures — in USFS's highest wildfire-risk band nationally — a figure built from its 220 buildings, not the land around them. (Source: USFS's Wildfire Risk to Communities methodology.)
USFS's separate burn-probability score — fire likelihood alone, before counting what's built there — puts Vienna at the 80th percentile, close to its 80th-percentile risk score.
Where Vienna's buildings actually sit
USFS puts 85.5% of Vienna's 220 buildings in the Indirect exposure zone, versus 12.7% Direct and 1.8% Minimal — a place where the fire doesn't need to reach the structure directly for embers to.
Vienna against the rest of the country
Compare Vienna's two percentiles: 96th within Maryland, only 80th nationally — a gap of 15 points that marks it as unusually exposed for its own state. Among the 31,521 US communities USFS scores, Vienna ranks 6,176 for wildfire risk (1 is highest) and 24,126 by building count (1 is largest). Within Maryland alone, it ranks 23 of 527 places by risk. See the full county-by-county picture for Maryland on its state page.
What this risk score means for insurance
At the 80th percentile nationally, Vienna carries the very high rating that has pushed some carriers to limit new business in similarly-scored places elsewhere in the country. Worth comparing quotes rather than assuming last year's renewal terms still apply.
Hardening a home in Vienna
Because 85.5% of Vienna'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.
More on how this number was built
Vienna's 80th-percentile score and its burn-probability figure both come from the same USFS workbook, documented in the methodology guide. For more on what indirect exposure implies beyond Vienna, see the exposure-zones guide.