Is Jones County, SD in a flood zone?
FEMA's National Risk Index puts Jones County's flood hazard at the 4.9th percentile nationally — among the lowest flood hazard in the country — 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. This describes the county, not any one street — FEMA only publishes exact parcel zones through a live map service.
Who actually carries the flood insurance FEMA requires
Jones County is one of the counties where FEMA's own denominator for mandated flood-zone structures is missing, so no compliance rate is shown rather than a guessed one — the data quality guide covers how common this is. Across all residential structures in Jones County, not just the ones FEMA mandates, 0% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
Jones County against the rest of the country
Jones County sits at rank 2998 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 3113 of 3144 by population (1 is biggest). Jones County, South Dakota covers 969.668 square miles and counts roughly 874 residents.
Your street may differ from Jones County's average
0 of Jones County's 682 residential structures carry flood coverage of some kind, per FEMA's latest count — useful context, not a substitute for checking one parcel.
More on how this number was built
The methodology guide shows exactly which FEMA and Census tables feed Jones County's numbers. See the data quality guide for why Jones County, like hundreds of other counties, doesn't get a clean compliance percentage.