Glenham, SD
Glenham, SD's wildfire risk, in USFS's own numbers
Out of every US place USFS scores, Glenham lands at the 67th percentile for wildfire risk to structures — well above the national norm for wildfire risk — a figure built from its 157 buildings, not the land around them. (Source: USFS's Wildfire Risk to Communities methodology.)
Fire likelihood alone (USFS's burn-probability figure) ranks Glenham at the 61st national percentile — 6 points below its risk-to-structures score, a gap driven by how much is actually built there.
What "at risk" means for the buildings here
Most of Glenham's buildings (67.5%) sit in the Indirect zone, where wind-blown embers rather than flame front are the mechanism USFS is scoring — ember-resistant vents and non-combustible roofing are the interventions this pattern favors, more than defensible space alone.
Where Glenham ranks
Glenham's risk sits at a similar level relative to South Dakota (61st percentile statewide) as it does nationally (67th) — this place isn't unusual for its own state either way. Among the 31,521 US communities USFS scores, Glenham ranks 10,504 for wildfire risk (1 is highest) and 26,586 by building count (1 is largest). Within South Dakota alone, it ranks 174 of 439 places by risk. See the full county-by-county picture for South Dakota on its state page.
What this risk score means for insurance
At the 67th percentile nationally, Glenham carries the 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.
What would actually reduce this score
Glenham's 67.5% 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.
More on how this number was built
The methodology guide shows exactly how USFS turned 157 counted buildings into the percentiles shown above for Glenham. For more on what indirect exposure implies beyond Glenham, see the exposure-zones guide.