of the 102 Counties in Illinois the fastest growing County is Kendall County with 14.93% growth. The County lowest growth is Alexander County with -36.39% growth.
List of Counties in Illinois With Population Percentage Change | |||||
|---|---|---|---|---|---|
| Map Key | Name | Population Change | Population | ||
| Adams County | -2.04% | 67,098 | |||
| Alexander County | -36.39% | 8,147 | |||
| Bond County | -5.87% | 17,762 | |||
| Boone County | -1.32% | 54,141 | |||
| Brown County | -9.99% | 6,913 | |||
| Bureau County | -4.96% | 34,798 | |||
| Calhoun County | -12.81% | 5,065 | |||
| Carroll County | 2.05% | 15,338 | |||
| Cass County | -4.4% | 13,570 | |||
| Champaign County | 2.38% | 200,931 | |||
| Christian County | -2.21% | 34,805 | |||
| Clark County | -5.39% | 16,353 | |||
| Clay County | -3.81% | 13,828 | |||
| Clinton County | -2.29% | 37,793 | |||
| Coles County | -13.01% | 53,683 | |||
| Cook County | 1.56% | 5,197,677 | |||
| Crawford County | -5.74% | 19,777 | |||
| Cumberland County | -5.41% | 11,044 | |||
| De Witt County | -6.31% | 16,562 | |||
| DeKalb County | -4.51% | 104,820 | |||
| Douglas County | -1.2% | 19,908 | |||
| DuPage County | 1.74% | 918,608 | |||
| Edgar County | -9.21% | 18,513 | |||
| Edwards County | -7.08% | 6,691 | |||
| Effingham County | 1.24% | 34,258 | |||
| Fayette County | -2.94% | 22,082 | |||
| Ford County | -3.88% | 14,045 | |||
| Franklin County | -4.44% | 39,518 | |||
| Fulton County | -9.33% | 36,989 | |||
| Gallatin County | -11.5% | 5,592 | |||
| Greene County | -13.69% | 13,828 | |||
| Grundy County | 4.93% | 49,870 | |||
| Hamilton County | -5.49% | 8,430 | |||
| Hancock County | -7.77% | 19,063 | |||
| Hardin County | -15.53% | 4,315 | |||
| Henderson County | -12.88% | 7,275 | |||
| Henry County | -2.38% | 50,378 | |||
| Iroquois County | -8.89% | 29,689 | |||
| Jackson County | -12.03% | 59,992 | |||
| Jasper County | -4.24% | 9,707 | |||
| Jefferson County | -4.41% | 38,908 | |||
| Jersey County | -6.41% | 22,939 | |||
| Jo Daviess County | -2.84% | 22,663 | |||
| Johnson County | 5.77% | 12,653 | |||
| Kane County | 0.24% | 514,891 | |||
| Kankakee County | -5.24% | 113,170 | |||
| Kendall County | 14.93% | 114,226 | |||
| Knox County | -5.58% | 52,698 | |||
| Lake County | 1.55% | 701,282 | |||
| LaSalle County | -3.74% | 113,688 | |||
| Lawrence County | -9.23% | 16,778 | |||
| Lee County | -5.23% | 35,778 | |||
| Livingston County | -8.05% | 38,903 | |||
| Logan County | -7.65% | 30,278 | |||
| Macon County | -6.11% | 110,558 | |||
| Macoupin County | -5.86% | 47,712 | |||
| Madison County | -1.27% | 268,586 | |||
| Marion County | -4.33% | 39,319 | |||
| Marshall County | -7.1% | 12,567 | |||
| Mason County | -10.77% | 14,636 | |||
| Massac County | -8.17% | 15,370 | |||
| Mcdonough County | -16.48% | 32,568 | |||
| Mchenry County | 0.48% | 308,163 | |||
| Mclean County | 0.81% | 169,689 | |||
| Menard County | -3.21% | 12,728 | |||
| Mercer County | -4.47% | 16,421 | |||
| Monroe County | 6.08% | 33,003 | |||
| Montgomery County | -6.03% | 29,977 | |||
| Morgan County | -7.4% | 35,544 | |||
| Moultrie County | -2.16% | 14,844 | |||
| Ogle County | -3.19% | 53,378 | |||
| Peoria County | -2.5% | 186,399 | |||
| Perry County | -6.29% | 22,287 | |||
| Piatt County | -0.33% | 16,679 | |||
| Pike County | -10.29% | 16,436 | |||
| Pope County | -15.82% | 4,399 | |||
| Pulaski County | -15.71% | 6,107 | |||
| Putnam County | -6.14% | 5,968 | |||
| Randolph County | -9.9% | 33,353 | |||
| Richland County | -2.59% | 16,181 | |||
| Rock Island County | -1.95% | 147,504 | |||
| Saint Clair County | -4.69% | 268,873 | |||
| Saline County | -4.6% | 24,975 | |||
| Sangamon County | -0.57% | 197,474 | |||
| Schuyler County | -8.51% | 7,499 | |||
| Scott County | -7.58% | 5,322 | |||
| Shelby County | -6.14% | 22,316 | |||
| Stark County | -9.91% | 5,983 | |||
| Stephenson County | -6.46% | 47,532 | |||
| Tazewell County | -2.99% | 135,201 | |||
| Union County | -3.17% | 17,799 | |||
| Vermilion County | -9.11% | 81,463 | |||
| Wabash County | -4.9% | 11,935 | |||
| Warren County | -4.92% | 17,723 | |||
| Washington County | -6.49% | 14,692 | |||
| Wayne County | -3.47% | 16,727 | |||
| White County | -5.37% | 14,686 | |||
| Whiteside County | -4.8% | 58,400 | |||
| Will County | 2.77% | 677,669 | |||
| Williamson County | 1.2% | 66,335 | |||
| Winnebago County | -3.36% | 294,433 | |||
| Woodford County | -0.51% | 38,736 | |||