Spencer County, IN flood risk explained
Flood hazard in Spencer County sits at the 45.5th 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 2.9 times a year. County-wide, not parcel-specific: FEMA's real flood-zone map is queried live, never shipped as a download.
Mandatory flood insurance compliance in Spencer County
Out of 577 homes FEMA counts inside Spencer County's mapped flood zone, 80 carry the flood policy federal law requires there — 13.9% compliance, short of full coverage. Looking beyond the mandated zone, 0.8% of all residential structures in Spencer County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Where Spencer County ranks
Among the 3144 US counties FEMA scores for flood hazard, Spencer County ranks 1773 — 1 being the highest hazard nationally — and 1815 by population among all 3144 counties covered here, where 1 is the largest. Spencer County, Indiana covers 396.888 square miles and counts roughly 20,192 residents.
Checking a specific address in Spencer County
FEMA counts 10,457 residential structures in Spencer County overall, 84 of them carrying some form of NFIP coverage — but a lender or insurer cares about one parcel, not that county total.
Where Spencer 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.