Mississippi County, MO: flood risk, in FEMA's own numbers
On FEMA's National Risk Index, Mississippi County scores at the 25.5th 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 1.5 times a year. This describes the county, not any one street — FEMA only publishes exact parcel zones through a live map service.
Mississippi County's flood-insurance compliance gap
FEMA hasn't published a residential structure count for Mississippi 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, 3.5% of all residential structures in Mississippi County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
How Mississippi County compares nationally
Among the 3144 US counties FEMA scores for flood hazard, Mississippi County ranks 2387 — 1 being the highest hazard nationally — and 2299 by population among all 3144 counties covered here, where 1 is the largest. About 11,750 people live in Mississippi County, Missouri, spread over 411.596 square miles.
Your street may differ from Mississippi County's average
FEMA counts 6,157 residential structures in Mississippi County overall, 217 of them carrying some form of NFIP coverage — but a lender or insurer cares about one parcel, not that county total.
Where Mississippi County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. Mississippi 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.