Illinois Threat Assessment
102 counties ranked by FEMA National Risk Index composite score.
| County | Threat Level | NRI Score | Rating |
|---|---|---|---|
| Cook County | Critical | 44.3 | Very High |
| St. Clair County | High | 20.8 | Relatively Moderate |
| Winnebago County | High | 19.2 | Relatively Moderate |
| Alexander County | High | 19.0 | Relatively Moderate |
| Madison County | High | 17.1 | Relatively Moderate |
| Peoria County | High | 16.3 | Relatively Moderate |
| Macon County | High | 15.8 | Relatively Moderate |
| Sangamon County | High | 15.8 | Relatively Moderate |
| Jackson County | High | 15.3 | Relatively Moderate |
| Williamson County | High | 15.0 | Relatively Moderate |
| Rock Island County | High | 14.6 | Relatively Moderate |
| Champaign County | High | 14.0 | Relatively Moderate |
| Franklin County | High | 13.9 | Relatively Moderate |
| Kane County | Elevated | 13.6 | Relatively Moderate |
| Massac County | Elevated | 13.3 | Relatively Low |
| Saline County | Elevated | 13.3 | Relatively Low |
| Knox County | Elevated | 13.2 | Relatively Low |
| Stephenson County | Elevated | 13.1 | Relatively Low |
| Vermilion County | Elevated | 13.0 | Relatively Low |
| Coles County | Elevated | 12.8 | Relatively Low |
| LaSalle County | Elevated | 12.5 | Relatively Low |
| Marion County | Elevated | 12.2 | Relatively Low |
| DuPage County | Elevated | 12.0 | Relatively Low |
| Tazewell County | Elevated | 11.9 | Relatively Low |
| Morgan County | Elevated | 11.8 | Relatively Low |
| Adams County | Elevated | 11.3 | Relatively Low |
| Whiteside County | Elevated | 11.3 | Relatively Low |
| Jefferson County | Elevated | 11.2 | Relatively Low |
| Henry County | Elevated | 10.9 | Relatively Low |
| Warren County | Elevated | 10.9 | Relatively Low |
| Bureau County | Elevated | 10.8 | Relatively Low |
| Mason County | Elevated | 10.8 | Relatively Low |
| Will County | Elevated | 10.7 | Relatively Low |
| Kankakee County | Elevated | 10.6 | Relatively Low |
| Lake County | Elevated | 10.5 | Relatively Low |
| Logan County | Elevated | 10.5 | Relatively Low |
| White County | Elevated | 10.5 | Relatively Low |
| McLean County | Elevated | 10.3 | Relatively Low |
| Carroll County | Elevated | 10.2 | Relatively Low |
| Pulaski County | Elevated | 10.1 | Relatively Low |
| Union County | Elevated | 10.1 | Relatively Low |
| Fulton County | Elevated | 9.8 | Relatively Low |
| DeKalb County | Elevated | 9.7 | Relatively Low |
| McDonough County | Elevated | 9.5 | Relatively Low |
| Macoupin County | Elevated | 9.4 | Relatively Low |
| Pike County | Elevated | 9.4 | Relatively Low |
| Christian County | Elevated | 9.2 | Relatively Low |
| Jo Daviess County | Moderate | 9.1 | Relatively Low |
| Montgomery County | Moderate | 9.1 | Relatively Low |
| Lee County | Moderate | 9.0 | Relatively Low |
| Lawrence County | Moderate | 8.8 | Relatively Low |
| Moultrie County | Moderate | 8.7 | Relatively Low |
| Richland County | Moderate | 8.7 | Relatively Low |
| Hancock County | Moderate | 8.6 | Relatively Low |
| Clay County | Moderate | 8.5 | Relatively Low |
| Douglas County | Moderate | 8.5 | Relatively Low |
| Cass County | Moderate | 8.4 | Relatively Low |
| Iroquois County | Moderate | 8.4 | Relatively Low |
| Ogle County | Moderate | 8.4 | Relatively Low |
| Gallatin County | Moderate | 8.3 | Relatively Low |
| Clark County | Moderate | 8.1 | Relatively Low |
| Effingham County | Moderate | 8.0 | Very Low |
| Jersey County | Moderate | 8.0 | Very Low |
| Perry County | Moderate | 7.8 | Very Low |
| Henderson County | Moderate | 7.7 | Very Low |
| Marshall County | Moderate | 7.7 | Very Low |
| Mercer County | Moderate | 7.7 | Very Low |
| Wayne County | Moderate | 7.7 | Very Low |
| Clinton County | Moderate | 7.5 | Very Low |
| Randolph County | Moderate | 7.4 | Very Low |
| Shelby County | Moderate | 7.4 | Very Low |
| Edgar County | Moderate | 7.3 | Very Low |
| Hardin County | Moderate | 7.2 | Very Low |
| Bond County | Moderate | 7.1 | Very Low |
| Ford County | Moderate | 7.1 | Very Low |
| Greene County | Moderate | 7.0 | Very Low |
| Woodford County | Moderate | 7.0 | Very Low |
| Crawford County | Moderate | 6.9 | Very Low |
| Menard County | Moderate | 6.8 | Very Low |
| Fayette County | Guarded | 6.7 | Very Low |
| Pope County | Guarded | 6.7 | Very Low |
| Schuyler County | Guarded | 6.7 | Very Low |
| Stark County | Guarded | 6.7 | Very Low |
| Washington County | Guarded | 6.7 | Very Low |
| McHenry County | Guarded | 6.6 | Very Low |
| De Witt County | Guarded | 6.5 | Very Low |
| Livingston County | Guarded | 6.5 | Very Low |
| Wabash County | Guarded | 6.5 | Very Low |
| Cumberland County | Guarded | 6.4 | Very Low |
| Grundy County | Guarded | 6.4 | Very Low |
| Scott County | Guarded | 6.3 | Very Low |
| Johnson County | Guarded | 6.1 | Very Low |
| Boone County | Guarded | 5.9 | Very Low |
| Edwards County | Guarded | 5.9 | Very Low |
| Hamilton County | Guarded | 5.9 | Very Low |
| Jasper County | Guarded | 5.7 | Very Low |
| Monroe County | Guarded | 5.7 | Very Low |
| Calhoun County | Guarded | 5.0 | Very Low |
| Piatt County | Guarded | 4.9 | Very Low |
| Kendall County | Guarded | 3.6 | Very Low |
| Putnam County | Guarded | 3.3 | Very Low |
| Brown County | Guarded | 0.7 | Very Low |