countyscore

Best Disaster Risk Counties in Iowa

FEMA National Risk Index — flood, fire, tornado, and more Compare rankings across all 99 counties.

Average Disaster Risk Score
60/100
Top County
Worth County
Counties Ranked
99

Top 10

#1
Worth County
IA
90/100
#2
Monroe County
IA
90/100
#3
Grundy County
IA
87/100
#4
Ringgold County
IA
86/100
#5
Osceola County
IA
85/100
#6
Fremont County
IA
85/100
#7
Palo Alto County
IA
85/100
#8
Howard County
IA
84/100
#9
O'Brien County
IA
84/100
#10
Louisa County
IA
83/100

All Iowa Counties Ranked

#CountyDisaster Risk ScoreOverall Score
1Worth County, IA
90.2
70.4
2Monroe County, IA
89.7
59.1
3Grundy County, IA
86.9
69.1
4Ringgold County, IA
85.9
60.8
5Osceola County, IA
85.2
65.3
6Fremont County, IA
85
58.7
7Palo Alto County, IA
84.6
62.4
8Howard County, IA
84.4
68.1
9O'Brien County, IA
83.6
61.5
10Louisa County, IA
82.6
61.3
11Ida County, IA
81.7
71.2
12Clarke County, IA
81.6
43.7
13Mills County, IA
81.5
46.7
14Lyon County, IA
80.8
65.1
15Adams County, IA
79.7
61.1
16Cedar County, IA
78.5
58
17Keokuk County, IA
78.2
58.5
18Franklin County, IA
78.1
65.5
19Wayne County, IA
78
62.9
20Shelby County, IA
77.3
66.5
21Decatur County, IA
76.4
59.4
22Buchanan County, IA
76
62.4
23Humboldt County, IA
75.9
63.4
24Bremer County, IA
75.5
58.6
25Monona County, IA
74.9
59.3
26Guthrie County, IA
73.5
60.2
27Jefferson County, IA
73
48.4
28Butler County, IA
72.9
62.1
29Sac County, IA
72.7
63.9
30Iowa County, IA
71.8
56.6
31Boone County, IA
71.6
57.8
32Benton County, IA
71.2
56
33Hancock County, IA
71.2
61.6
34Lucas County, IA
70.3
55.8
35Mahaska County, IA
70.3
51.4
36Winnebago County, IA
69.4
68.8
37Henry County, IA
69.2
52.5
38Poweshiek County, IA
68.8
46.8
39Harrison County, IA
68.7
58.5
40Chickasaw County, IA
68.3
66.7
41Greene County, IA
68.2
58.4
42Kossuth County, IA
67.8
66.6
43Jones County, IA
67.4
60.7
44Pocahontas County, IA
67
65.2
45Van Buren County, IA
66.4
60.6
46Montgomery County, IA
66.3
53.5
47Cherokee County, IA
65.9
66.8
48Marion County, IA
65.7
59.2
49Madison County, IA
64.5
58.6
50Jackson County, IA
64
55.6
51Warren County, IA
63.9
51.7
52Winneshiek County, IA
63.8
67.9
53Dickinson County, IA
63.7
59.1
54Clay County, IA
63.6
59.7
55Mitchell County, IA
62.3
66.2
56Allamakee County, IA
61.8
60.2
57Taylor County, IA
61.5
64.2
58Audubon County, IA
61.4
59.7
59Buena Vista County, IA
60.7
46.7
60Page County, IA
59.8
52.7
61Appanoose County, IA
58.8
48.6
62Wright County, IA
58.5
59.7
63Clayton County, IA
57.8
59.9
64Emmet County, IA
57.3
61.6
65Hamilton County, IA
57.1
57.6
66Jasper County, IA
56.3
54.1
67Washington County, IA
55.8
51.6
68Calhoun County, IA
55.5
65.9
69Tama County, IA
54.7
56.6
70Floyd County, IA
52.3
56.7
71Plymouth County, IA
50.8
47.3
72Adair County, IA
50.5
62.5
73Union County, IA
50.5
53.6
74Delaware County, IA
50.3
60.2
75Davis County, IA
49.7
56
76Fayette County, IA
49.1
57
77Sioux County, IA
47.6
59.1
78Des Moines County, IA
44.2
34.7
79Carroll County, IA
42.4
61.5
80Muscatine County, IA
42.3
41.3
81Hardin County, IA
41.6
48.1
82Cass County, IA
40
42.7
83Webster County, IA
40
41.6
84Dallas County, IA
39.4
42
85Crawford County, IA
39.2
55.3
86Marshall County, IA
37.5
42
87Lee County, IA
37.1
42.8
88Dubuque County, IA
36.4
45.4
89Clinton County, IA
35.2
38.7
90Wapello County, IA
34.7
33.1
91Story County, IA
31.2
46.9
92Cerro Gordo County, IA
30.4
42.5
93Black Hawk County, IA
23.4
40.7
94Pottawattamie County, IA
19.6
36.1
95Woodbury County, IA
16.7
50.9
96Scott County, IA
15.1
37.2
97Linn County, IA
13.3
40.7
98Johnson County, IA
12.6
41.1
99Polk County, IA
8
36.6

Data Source

Disaster Risk data from RiskByCounty. See full details at RiskByCounty. Data updated February 2026.