Le Sueur County, MN: flood risk, in FEMA's own numbers
On FEMA's National Risk Index, Le Sueur County scores at the 34.6th percentile for flood hazard, rated "Very Low" — among the lowest flood hazard in the country. The hazard here is 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. That's a county-wide figure, not a per-address one — FEMA's parcel maps are a live lookup, not a bulk file.
Who actually carries the flood insurance FEMA requires
FEMA hasn't published a residential structure count for Le Sueur 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, 0.7% of all residential structures in Le Sueur County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Le Sueur County against the rest of the country
Among the 3144 US counties FEMA scores for flood hazard, Le Sueur County ranks 2116 — 1 being the highest hazard nationally — and 1454 by population among all 3144 counties covered here, where 1 is the largest. Le Sueur County, Minnesota is home to about 29,458 people across 448.756 square miles of land.
Your street may differ from Le Sueur County's average
88 of Le Sueur County's 12,251 residential structures carry flood coverage of some kind, per FEMA's latest count — useful context, not a substitute for checking one parcel.
Where Le Sueur County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. Le Sueur 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.