Is Pierce County, ND in a flood zone?
FEMA's National Risk Index puts Pierce County's flood hazard at the 2.5th 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 7 years. That's a county-wide figure, not a per-address one — FEMA's parcel maps are a live lookup, not a bulk file.
Pierce County's flood-insurance compliance gap
Pierce 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 Pierce 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 Pierce County compares nationally
Pierce County sits at rank 3069 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 2894 of 3144 by population (1 is biggest). Pierce County, North Dakota covers 1,018.285 square miles and counts roughly 3,853 residents.
Your street may differ from Pierce County's average
1 of Pierce County's 2,095 residential structures carry flood coverage of some kind, per FEMA's latest count — useful context, not a substitute for checking one parcel.
More on how this number was built
The methodology guide shows exactly which FEMA and Census tables feed Pierce County's numbers. See the data quality guide for why Pierce County, like hundreds of other counties, doesn't get a clean compliance percentage.