Is Hill County, MT in a flood zone?
FEMA's National Risk Index puts Hill County's flood hazard at the 43.4th 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 5 years. That's a county-wide figure, not a per-address one — FEMA's parcel maps are a live lookup, not a bulk file.
Mandatory flood insurance compliance in Hill County
Hill 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 Hill County, not just the ones FEMA mandates, 0.1% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
How Hill County compares nationally
Hill County sits at rank 1841 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 2032 of 3144 by population (1 is biggest). Hill County, Montana covers 2,899.396 square miles and counts roughly 16,065 residents.
Checking a specific address in Hill County
Across all of Hill County's 8,495 residential structures, 9 carry an NFIP policy today — a county-wide count that still can't tell you one address's own mapped zone.
More on how this number was built
The methodology guide shows exactly which FEMA and Census tables feed Hill County's numbers. See the data quality guide for why Hill County, like hundreds of other counties, doesn't get a clean compliance percentage.