riskbycounty

Iowa Disaster Risk

Natural disaster risk data for all 99 counties.

Avg Risk Score

39.7

Risk Rating

Relatively Moderate

Counties with Data

99

of 99 total

All Iowa Counties

CountyRisk Score
Polk County92.0
Johnson County87.4
Linn County86.7
Scott County84.9
Woodbury County83.3
Pottawattamie County80.4
Black Hawk County76.6
Cerro Gordo County69.6
Story County68.8
Wapello County65.3
Clinton County64.8
Dubuque County63.6
Lee County62.9
Marshall County62.5
Crawford County60.8
Dallas County60.6
Cass County60.1
Webster County60.0
Hardin County58.4
Muscatine County57.8
Carroll County57.6
Des Moines County55.8
Sioux County52.4
Fayette County50.9
Davis County50.3
Delaware County49.7
Union County49.5
Adair County49.5
Plymouth County49.2
Floyd County47.7
Tama County45.3
Calhoun County44.6
Washington County44.2
Jasper County43.7
Hamilton County42.9
Emmet County42.7
Clayton County42.2
Wright County41.5
Appanoose County41.2
Page County40.2
Buena Vista County39.3
Audubon County38.6
Taylor County38.5
Allamakee County38.2
Mitchell County37.7
Clay County36.4
Dickinson County36.3
Winneshiek County36.2
Warren County36.1
Jackson County36.1
Madison County35.5
Marion County34.4
Cherokee County34.1
Montgomery County33.7
Van Buren County33.6
Pocahontas County33.0
Jones County32.7
Kossuth County32.3
Greene County31.8
Chickasaw County31.7
Harrison County31.3
Poweshiek County31.3
Henry County30.9
Winnebago County30.7
Mahaska County29.7
Lucas County29.7
Benton County28.8
Hancock County28.8
Boone County28.4
Iowa County28.2
Sac County27.3
Butler County27.1
Jefferson County27.1
Guthrie County26.5
Monona County25.1
Bremer County24.6
Humboldt County24.1
Buchanan County24.0
Decatur County23.6
Shelby County22.8
Wayne County22.0
Franklin County21.9
Keokuk County21.9
Cedar County21.5
Adams County20.4
Lyon County19.2
Mills County18.5
Clarke County18.4
Ida County18.4
Louisa County17.5
O'Brien County16.4
Howard County15.6
Palo Alto County15.5
Fremont County15.0
Osceola County14.9
Ringgold County14.2
Grundy County13.1
Monroe County10.3
Worth County9.9

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Data Source

Risk data sourced from the FEMA National Risk Index (NRI). Risk scores are relative rankings (0–100) across all US counties — not absolute risk measures. Higher scores indicate higher relative risk compared to other counties.

Disclaimer: This data is informational only. It is not financial, insurance, or legal advice. Always consult a qualified professional before making insurance or real estate decisions.

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