Is Chugach Census Area, AK in a flood zone?
FEMA's National Risk Index puts Chugach Census Area's flood hazard at the 20.8th percentile nationally — among the lowest flood hazard in the country — driven by coastal storm surge rather than inland rivers — FEMA's model puts a surge event here at about once every 83 years. This describes the county, not any one street — FEMA only publishes exact parcel zones through a live map service.
Who actually carries the flood insurance FEMA requires
Chugach Census Area 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 Chugach Census Area, not just the ones FEMA mandates, 1.2% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
Where Chugach Census Area ranks
Chugach Census Area sits at rank 2531 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 2691 of 3144 by population (1 is biggest). Chugach Census Area, Alaska is home to about 6,604 people across 9,574.349 square miles of land.
Your street may differ from Chugach Census Area's average
Across all of Chugach Census Area's 2,388 residential structures, 28 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 Chugach Census Area's numbers. See the data quality guide for why Chugach Census Area, like hundreds of other counties, doesn't get a clean compliance percentage.