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Flood risk in Iowa

FEMA NFIP historical claims and active policies aggregated by county. Pick a county to see total paid, average claim amount, and active policy count.

Counties with claims
77
of 82 reporting
Total NFIP claims
2,283
Total claims paid
$50,434,770
Active policies
1,681

Highest flood risk counties

Claims per 1,000 housing units. Higher means a larger share of homes have a documented claim on file.

  1. 1.Fremont County33.99 / 1k
  2. 2.Cherokee County12.25 / 1k
  3. 3.Butler County8.73 / 1k
  4. 4.Mills County6.27 / 1k
  5. 5.Des Moines County6.14 / 1k
  6. 6.Lyon County5.89 / 1k
  7. 7.Buchanan County4.86 / 1k
  8. 8.Pottawattamie County4.76 / 1k
  9. 9.Tama County4.62 / 1k
  10. 10.Clay County4.43 / 1k

Lowest flood risk counties

Claims per 1,000 housing units, restricted to counties of at least 25,000 residents.

  1. 1.Warren County0.20 / 1k
  2. 2.Dallas County0.25 / 1k
  3. 3.Marion County0.30 / 1k
  4. 4.Cerro Gordo County0.51 / 1k
  5. 5.Boone County0.64 / 1k
  6. 6.Marshall County0.65 / 1k
  7. 7.Johnson County0.72 / 1k
  8. 8.Woodbury County0.87 / 1k
  9. 9.Jasper County0.89 / 1k
  10. 10.Polk County0.90 / 1k

Counties by historical claims

Sorted by total claims, highest first. Historical totals do not capture uninsured properties or future climate shifts.

How to read this

Historical claims show where NFIP-insured properties have actually filed. They under-count uninsured properties and don't forecast future risk from climate, upstream development, or new mitigation projects. For parcel-specific flood-zone designations, use FEMA's Map Service Center.

Data sources

Disclaimer. HomeRule is not a real estate agent, lender, appraiser, or financial advisor. This content is for educational and informational purposes only. Actual costs vary significantly by property, location, and individual circumstances. Consult qualified professionals for personalized advice.