Is Bristol Bay Borough, AK in a flood zone?
FEMA's National Risk Index puts Bristol Bay Borough's flood hazard at the 0th percentile nationally — not rated by FEMA’s risk index — split between inland river flooding (about once every Infinity years) and coastal storm surge (about once every Infinity years). County-wide, not parcel-specific: FEMA's real flood-zone map is queried live, never shipped as a download.
Who actually carries the flood insurance FEMA requires
Bristol Bay Borough 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 Bristol Bay Borough, 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.
Where Bristol Bay Borough ranks
Bristol Bay Borough sits at rank 3144 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 3112 of 3144 by population (1 is biggest). Bristol Bay Borough, Alaska covers 481.382 square miles and counts roughly 884 residents.
Your street may differ from Bristol Bay Borough's average
Across all of Bristol Bay Borough's 846 residential structures, 0 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 Bristol Bay Borough's numbers. See the data quality guide for why Bristol Bay Borough, like hundreds of other counties, doesn't get a clean compliance percentage.