Is Marshall County, MS in a flood zone?
FEMA's National Risk Index puts Marshall County's flood hazard at the 59.3th percentile nationally — 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 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.
Mandatory flood insurance compliance in Marshall County
5.6% of the homes FEMA requires to carry flood insurance in Marshall County — those inside the mapped Special Flood Hazard Area — actually have a policy in force: 14 policies against 251 mandated structures, which means a meaningful share of legally-required coverage simply isn't there. Across all residential structures in Marshall County, not just the ones FEMA mandates, 0.1% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
How Marshall County compares nationally
Marshall County sits at rank 1339 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 1326 of 3144 by population (1 is biggest). About 34,374 people live in Marshall County, Mississippi, spread over 706.192 square miles.
Your street may differ from Marshall County's average
FEMA counts 19,801 residential structures in Marshall County overall, 22 of them carrying some form of NFIP coverage — but a lender or insurer cares about one parcel, not that county total.
More on how this number was built
The methodology guide shows exactly which FEMA and Census tables feed Marshall County's numbers. The guide to what the Special Flood Hazard Area actually means explains why the mandatory-insurance rule exists and who it applies to.