Iosco County, MI flood risk explained
Flood hazard in Iosco County sits at the 52.9th national percentile, below the national norm for flood hazard; driven by inland rivers and flash flooding rather than the coast — FEMA's model puts a flood event here at about once every 6 years. This describes the county, not any one street — FEMA only publishes exact parcel zones through a live map service.
Mandatory flood insurance compliance in Iosco County
Out of 1,070 homes FEMA counts inside Iosco County's mapped flood zone, 132 carry the flood policy federal law requires there — 12.3% compliance, short of full coverage. Looking beyond the mandated zone, 1% of all residential structures in Iosco County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Where Iosco County ranks
Among the 3144 US counties FEMA scores for flood hazard, Iosco County ranks 1542 — 1 being the highest hazard nationally — and 1611 by population among all 3144 counties covered here, where 1 is the largest. Iosco County, Michigan covers 549.477 square miles and counts roughly 25,361 residents.
Your street may differ from Iosco County's average
FEMA counts 17,574 residential structures in Iosco County overall, 183 of them carrying some form of NFIP coverage — but a lender or insurer cares about one parcel, not that county total.
Where Iosco County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. If you're unsure why any of this insurance requirement exists at all, the SFHA explainer covers it from first principles.