Is Glacier County, MT in a flood zone?
FEMA's National Risk Index puts Glacier County's flood hazard at the 45.5th percentile nationally — below the national norm for flood hazard — driven by inland rivers and flash flooding rather than the coast — FEMA's model puts a flood event here at about once every 4 years. That's a county-wide figure, not a per-address one — FEMA's parcel maps are a live lookup, not a bulk file.
Who actually carries the flood insurance FEMA requires
Glacier County is one of the counties where FEMA's own denominator for mandated flood-zone structures is missing, so no compliance rate is shown rather than a guessed one — the data quality guide covers how common this is. Across all residential structures in Glacier County, not just the ones FEMA mandates, 0% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
Glacier County against the rest of the country
Glacier County sits at rank 1775 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 2189 of 3144 by population (1 is biggest). Glacier County, Montana is home to about 13,503 people across 2,995.151 square miles of land.
Checking a specific address in Glacier County
FEMA counts 4,878 residential structures in Glacier County overall, 1 of them carrying some form of NFIP coverage — but a lender or insurer cares about one parcel, not that county total.
More on how this number was built
The methodology guide shows exactly which FEMA and Census tables feed Glacier County's numbers. See the data quality guide for why Glacier County, like hundreds of other counties, doesn't get a clean compliance percentage.