Martin County, TX flood risk explained
Flood hazard in Martin County sits at the 28.6th 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 1 years. This describes the county, not any one street — FEMA only publishes exact parcel zones through a live map service.
Martin County's flood-insurance compliance gap
FEMA hasn't published a residential structure count for Martin 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, 0.4% of all residential structures in Martin County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
How Martin County compares nationally
Among the 3144 US counties FEMA scores for flood hazard, Martin County ranks 2298 — 1 being the highest hazard nationally — and 2806 by population among all 3144 counties covered here, where 1 is the largest. Martin County, Texas covers 914.956 square miles and counts roughly 5,179 residents.
Your street may differ from Martin County's average
FEMA counts 1,706 residential structures in Martin County overall, 7 of them carrying some form of NFIP coverage — but a lender or insurer cares about one parcel, not that county total.
Where Martin County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. Martin 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.