St. Joseph County, MI: flood risk, in FEMA's own numbers
On FEMA's National Risk Index, St. Joseph County scores at the 68.1th percentile for flood hazard, rated "Relatively Low" — below the national norm for flood hazard. The hazard here is 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. That's a county-wide figure, not a per-address one — FEMA's parcel maps are a live lookup, not a bulk file.
Who actually carries the flood insurance FEMA requires
16.5% of the homes FEMA requires to carry flood insurance in St. Joseph County — those inside the mapped Special Flood Hazard Area — actually have a policy in force: 60 policies against 364 mandated structures, which means a meaningful share of legally-required coverage simply isn't there. Looking beyond the mandated zone, 0.3% of all residential structures in St. Joseph County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
How St. Joseph County compares nationally
Among the 3144 US counties FEMA scores for flood hazard, St. Joseph County ranks 1045 — 1 being the highest hazard nationally — and 883 by population among all 3144 counties covered here, where 1 is the largest. St. Joseph County, Michigan covers 500.639 square miles and counts roughly 61,171 residents.
Your street may differ from St. Joseph County's average
84 of St. Joseph County's 26,570 residential structures carry flood coverage of some kind, per FEMA's latest count — useful context, not a substitute for checking one parcel.
Where St. Joseph 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.