Guilford County, NC flood risk explained
Flood hazard in Guilford County sits at the 96.6th national percentile, well above 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 3.1 times a year. County-wide, not parcel-specific: FEMA's real flood-zone map is queried live, never shipped as a download.
Who actually carries the flood insurance FEMA requires
Homes with a federally backed mortgage inside Guilford 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, 40.3% of them do — 340 active policies against 843 structures FEMA counts in that zone, leaving a real compliance gap. Looking beyond the mandated zone, 0.4% of all residential structures in Guilford County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
How Guilford County compares nationally
Among the 3144 US counties FEMA scores for flood hazard, Guilford County ranks 116 — 1 being the highest hazard nationally — and 129 by population among all 3144 counties covered here, where 1 is the largest. About 558,816 people live in Guilford County, North Carolina, spread over 645.993 square miles.
Checking a specific address in Guilford County
707 of Guilford County's 170,796 residential structures carry flood coverage of some kind, per FEMA's latest count — useful context, not a substitute for checking one parcel.
Where Guilford County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. If you're unsure why any of this insurance requirement exists at all, the SFHA explainer covers it from first principles.