How much flood risk does McCormick County actually carry?
McCormick County lands at the 16.8th percentile of FEMA's National Risk Index for flooding, "Very Low" territory — among the lowest flood hazard in the country — with the hazard driven by inland rivers and flash flooding rather than the coast — FEMA's model puts a flood event here at about once every 7 years. This describes the county, not any one street — FEMA only publishes exact parcel zones through a live map service.
Mandatory flood insurance compliance in McCormick County
Out of 34 homes FEMA counts inside McCormick County's mapped flood zone, 31 carry the flood policy federal law requires there — 91.2% compliance, among the stronger rates FEMA reports. Across all residential structures in McCormick County, not just the ones FEMA mandates, 1.4% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
How McCormick County compares nationally
McCormick County sits at rank 2650 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 2409 of 3144 by population (1 is biggest). About 9,983 people live in McCormick County, South Carolina, spread over 358.89 square miles.
Your street may differ from McCormick County's average
42 of McCormick County's 3,012 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 McCormick 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.