King County, TX flood risk explained
Flood hazard in King County sits at the 0.6th 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 14 years. That's a county-wide figure, not a per-address one — FEMA's parcel maps are a live lookup, not a bulk file.
King County's flood-insurance compliance gap
FEMA hasn't published a residential structure count for King County'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, 0% of all residential structures in King County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Where King County ranks
Among the 3144 US counties FEMA scores for flood hazard, King County ranks 3128 — 1 being the highest hazard nationally — and 3142 by population among all 3144 counties covered here, where 1 is the largest. About 215 people live in King County, Texas, spread over 910.873 square miles.
What to do next if you own or are buying in King County
FEMA counts 150 residential structures in King County overall, 0 of them carrying some form of NFIP coverage — but a lender or insurer cares about one parcel, not that county total.
Where King County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. King County'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.