Is Grant County, ND in a flood zone?
FEMA's National Risk Index puts Grant County's flood hazard at the 6.7th percentile nationally — among the lowest flood hazard in the country — 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.
Mandatory flood insurance compliance in Grant County
Grant 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 Grant County, not just the ones FEMA mandates, 0.2% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
Grant County against the rest of the country
Grant County sits at rank 2946 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 3025 of 3144 by population (1 is biggest). About 2,247 people live in Grant County, North Dakota, spread over 1,659.233 square miles.
What to do next if you own or are buying in Grant County
Across all of Grant County's 1,512 residential structures, 3 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 Grant County's numbers. See the data quality guide for why Grant County, like hundreds of other counties, doesn't get a clean compliance percentage.