Macoupin County, IL flood risk explained
Flood hazard in Macoupin County sits at the 68.7th national percentile, below 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 once every 1 years. 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
FEMA hasn't published a residential structure count for Macoupin County's mapped flood zone, so a reliable mandatory-compliance percentage can't be computed here — see the data quality guide for why this gap exists for roughly a quarter of US counties. Looking beyond the mandated zone, 0.1% of all residential structures in Macoupin County carry flood coverage voluntarily or otherwise — relevant because most NFIP claims nationally come from outside the mapped SFHA.
Where Macoupin County ranks
Among the 3144 US counties FEMA scores for flood hazard, Macoupin County ranks 1026 — 1 being the highest hazard nationally — and 1118 by population among all 3144 counties covered here, where 1 is the largest. Macoupin County, Illinois is home to about 43,895 people across 862.995 square miles of land.
Your street may differ from Macoupin County's average
Across all of Macoupin County's 18,093 residential structures, 11 carry an NFIP policy today — a county-wide count that still can't tell you one address's own mapped zone.
Where Macoupin County's figures come from
Every figure on this page traces to a named FEMA dataset, documented in the methodology guide. Macoupin County's compliance figure is one of the ones affected by FEMA's incomplete denominator data — the data quality guide explains what that means and how many counties it touches.