Earthquake Risk in Illinois

All Illinois counties ranked by FEMA National Risk Index earthquake score

Earthquake risk — ground shaking from sudden movement along geologic faults — is rated for 102 of 102 Illinois counties in FEMA's National Risk Index. Cook County carries the state's highest earthquake score at 98.4, with $57M in expected annual earthquake losses.

1 Illinois county is rated High or Very High for earthquake, and expected annual losses from earthquake total roughly $470M statewide. The full ranking below links to each county's complete 18-hazard risk profile.

County Rankings — Earthquake

#CountyEarthquake ScoreRatingAnn. Freq.Ann. Loss
1 Cook County
98.4
High 0.00 / yr $57M
2 St. Clair County
98.0
Medium 0.01 / yr $51M
3 Madison County
97.1
Medium 0.01 / yr $35M
4 Jackson County
96.7
Medium 0.01 / yr $20M
5 Williamson County
96.3
Medium 0.01 / yr $20M
6 Jefferson County
95.8
Medium 0.01 / yr $16M
7 Randolph County
95.5
Medium 0.01 / yr $15M
8 Franklin County
95.4
Medium 0.01 / yr $12M
9 Marion County
95.0
Medium 0.01 / yr $12M
10 Sangamon County
94.6
Medium 0.00 / yr $14M
11 Perry County
94.3
Medium 0.01 / yr $10M
12 Macoupin County
94.1
Medium 0.00 / yr $11M
13 Saline County
94.1
Medium 0.01 / yr $8M
14 Massac County
93.6
Medium 0.01 / yr $8M
15 DuPage County
93.2
Medium 0.00 / yr $11M
16 White County
91.9
Medium 0.01 / yr $6M
17 Clinton County
91.2
Medium 0.01 / yr $7M
18 Pulaski County
91.2
Medium 0.01 / yr $4M
19 Johnson County
91.0
Medium 0.01 / yr $4M
20 Hamilton County
90.7
Medium 0.01 / yr $7M
21 Washington County
90.5
Medium 0.01 / yr $6M
22 Montgomery County
90.4
Medium 0.00 / yr $5M
23 Will County
90.3
Medium 0.00 / yr $7M
24 Alexander County
90.2
Medium 0.01 / yr $4M
25 Union County
90.1
Medium 0.01 / yr $4M
26 Macon County
89.9
Low 0.00 / yr $5M
27 Richland County
89.6
Low 0.01 / yr $4M
28 Champaign County
89.5
Low 0.00 / yr $5M
29 Effingham County
88.5
Low 0.00 / yr $5M
30 Coles County
87.3
Low 0.00 / yr $4M
31 Christian County
87.2
Low 0.00 / yr $4M
32 Bond County
86.5
Low 0.01 / yr $3M
33 Kane County
86.4
Low 0.00 / yr $4M
34 Wayne County
86.4
Low 0.01 / yr $3M
35 Clay County
86.3
Low 0.01 / yr $3M
36 Fayette County
86.1
Low 0.01 / yr $3M
37 Wabash County
86.0
Low 0.01 / yr $3M
38 Lake County
85.7
Low 0.00 / yr $4M
39 Lawrence County
85.5
Low 0.01 / yr $3M
40 Vermilion County
85.2
Low 0.00 / yr $2M
41 Crawford County
84.8
Low 0.01 / yr $3M
42 Monroe County
84.5
Low 0.01 / yr $5M
43 Gallatin County
84.5
Low 0.01 / yr $2M
44 Edwards County
83.7
Low 0.01 / yr $2M
45 Edgar County
82.6
Low 0.00 / yr $2M
46 LaSalle County
82.4
Low 0.00 / yr $2M
47 McLean County
82.3
Low 0.00 / yr $3M
48 Pope County
82.1
Low 0.01 / yr $2M
49 Morgan County
81.7
Low 0.00 / yr $2M
50 Clark County
80.9
Low 0.00 / yr $2M
51 Kankakee County
80.5
Low 0.00 / yr $2M
52 Winnebago County
80.0
Low 0.00 / yr $2M
53 Peoria County
79.9
Low 0.00 / yr $2M
54 Tazewell County
79.7
Low 0.00 / yr $2M
55 Fulton County
78.8
Low 0.00 / yr $1M
56 Shelby County
78.7
Low 0.00 / yr $2M
57 Logan County
76.8
Low 0.00 / yr $1M
58 Cumberland County
76.5
Low 0.00 / yr $1M
59 Douglas County
76.4
Low 0.00 / yr $1M
60 DeKalb County
75.8
Low 0.00 / yr $1M
61 Jasper County
75.6
Low 0.01 / yr $2M
62 Moultrie County
75.2
Low 0.00 / yr $844K
63 McHenry County
74.7
Low 0.00 / yr $2M
64 Bureau County
74.0
Low 0.00 / yr $1M
65 Livingston County
71.2
Low 0.00 / yr $931K
66 Iroquois County
71.1
Low 0.00 / yr $891K
67 Hardin County
69.0
Low 0.01 / yr $631K
68 Menard County
68.0
Low 0.00 / yr $608K
69 Kendall County
66.5
Low 0.00 / yr $1M
70 Piatt County
66.4
Low 0.00 / yr $741K
71 De Witt County
65.7
Low 0.00 / yr $630K
72 Adams County
64.6
Low 0.00 / yr $645K
73 Jersey County
64.3
Low 0.00 / yr $909K
74 Ogle County
63.8
Low 0.00 / yr $686K
75 Mason County
63.8
Low 0.00 / yr $510K
76 Whiteside County
62.7
Low 0.00 / yr $518K
77 Rock Island County
62.3
Low 0.00 / yr $451K
78 McDonough County
59.6
Low 0.00 / yr $380K
79 Ford County
59.6
Low 0.00 / yr $452K
80 Knox County
58.4
Very Low 0.00 / yr $388K
81 Henry County
58.1
Very Low 0.00 / yr $519K
82 Stephenson County
57.7
Very Low 0.00 / yr $360K
83 Grundy County
56.3
Very Low 0.00 / yr $755K
84 Greene County
55.8
Very Low 0.00 / yr $410K
85 Marshall County
54.5
Very Low 0.00 / yr $338K
86 Woodford County
54.4
Very Low 0.00 / yr $609K
87 Lee County
49.6
Very Low 0.00 / yr $308K
88 Pike County
47.7
Very Low 0.00 / yr $241K
89 Cass County
47.6
Very Low 0.00 / yr $248K
90 Boone County
45.6
Very Low 0.00 / yr $234K
91 Hancock County
40.6
Very Low 0.00 / yr $132K
92 Putnam County
39.9
Very Low 0.00 / yr $159K
93 Schuyler County
35.5
Very Low 0.00 / yr $90K
94 Warren County
34.4
Very Low 0.00 / yr $122K
95 Calhoun County
33.8
Very Low 0.00 / yr $125K
96 Carroll County
31.6
Very Low 0.00 / yr $80K
97 Stark County
30.4
Very Low 0.00 / yr $93K
98 Scott County
28.8
Very Low 0.00 / yr $101K
99 Jo Daviess County
28.1
Very Low 0.00 / yr $57K
100 Brown County
28.0
Very Low 0.00 / yr $64K
101 Henderson County
27.6
Very Low 0.00 / yr $43K
102 Mercer County
24.7
Very Low 0.00 / yr $69K

102 Illinois counties with measurable earthquake risk. See the national earthquake ranking or all Illinois counties by overall risk.

Frequently Asked Questions

Which Illinois county has the highest earthquake risk?

Cook County has the highest FEMA earthquake risk score in Illinois at 98.4 (High), with $57M in expected annual losses and about 0.00 events per year.

How many Illinois counties face significant earthquake risk?

102 Illinois counties record measurable earthquake risk in FEMA's National Risk Index; 1 of them are rated High or Very High.

Other Hazards in Illinois

Cold Wave Drought Hail Heat Wave Hurricane Ice Storm Riverine Flood Landslide Lightning Strong Wind Tornado Wildfire Winter Weather