Yukon-Koyukuk Census Area, AK flood risk explained
Flood hazard in Yukon-Koyukuk Census Area sits at the 6.6th national percentile, 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 100 years. County-wide, not parcel-specific: FEMA's real flood-zone map is queried live, never shipped as a download.
Yukon-Koyukuk Census Area's flood-insurance compliance gap
FEMA hasn't published a residential structure count for Yukon-Koyukuk Census Area's mapped flood zone, so a reliable mandatory-compliance percentage can't be computed here — see the data quality guide for why this gap exists for roughly a quarter of US counties. Looking beyond the mandated zone, 2.4% of all residential structures in Yukon-Koyukuk Census Area carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Yukon-Koyukuk Census Area against the rest of the country
Among the 3144 US counties FEMA scores for flood hazard, Yukon-Koyukuk Census Area ranks 2947 — 1 being the highest hazard nationally — and 2812 by population among all 3144 counties covered here, where 1 is the largest. Yukon-Koyukuk Census Area, Alaska is home to about 5,099 people across 145,767.488 square miles of land.
What to do next if you own or are buying in Yukon-Koyukuk Census Area
Across all of Yukon-Koyukuk Census Area's 2,764 residential structures, 67 carry an NFIP policy today — a county-wide count that still can't tell you one address's own mapped zone.
Where Yukon-Koyukuk Census Area's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. Yukon-Koyukuk Census Area's compliance figure is one of the ones affected by FEMA's incomplete denominator data — the data quality guide explains what that means and how many counties it touches.