Is Charles Mix County, SD in a flood zone?
FEMA's National Risk Index puts Charles Mix County's flood hazard at the 40.5th 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 1.7 times a year. County-wide, not parcel-specific: FEMA's real flood-zone map is queried live, never shipped as a download.
Charles Mix County's flood-insurance compliance gap
1.5% of the homes FEMA requires to carry flood insurance in Charles Mix County — those inside the mapped Special Flood Hazard Area — actually have a policy in force: 1 policies against 66 mandated structures, which means a meaningful share of legally-required coverage simply isn't there. Across all residential structures in Charles Mix 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.
Where Charles Mix County ranks
Charles Mix County sits at rank 1932 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 2464 of 3144 by population (1 is biggest). About 9,343 people live in Charles Mix County, South Dakota, spread over 1,097.141 square miles.
Your street may differ from Charles Mix County's average
FEMA counts 4,037 residential structures in Charles Mix County overall, 2 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 Charles Mix 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.