How much flood risk does Carroll County actually carry?
Carroll County lands at the 42.8th percentile of FEMA's National Risk Index for flooding, "Relatively Low" territory — below the national norm for flood hazard — with the hazard driven by inland rivers and flash flooding rather than the coast — FEMA's model puts a flood event here at about 1.8 times a year. This describes the county, not any one street — FEMA only publishes exact parcel zones through a live map service.
Carroll County's flood-insurance compliance gap
Homes with a federally backed mortgage inside Carroll County's mapped high-risk flood zone (the Special Flood Hazard Area, or SFHA) are legally required to carry an NFIP flood policy. In practice, 12.9% of them do — 47 active policies against 364 structures FEMA counts in that zone, leaving a real compliance gap. Across all residential structures in Carroll County, not just the ones FEMA mandates, 0.4% carry an NFIP policy — most flood damage nationally happens outside the mapped high-risk zone, so that broader number matters too.
How Carroll County compares nationally
Carroll County sits at rank 1859 of 3144 counties on FEMA's flood hazard scale (1 is worst) and rank 1557 of 3144 by population (1 is biggest). Carroll County, Ohio is home to about 26,460 people across 394.673 square miles of land.
Checking a specific address in Carroll County
58 of Carroll County's 13,802 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 Carroll 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.