Illinois - County Infection Estimates

See state-wide estimates here.

Click on a county name to view the infections estimates for that county.

See the Counties Summary page for a searchable and sortable table.

Note: Due to the inherent lag between infections and reporting of cases, our estimates of infections are as of 14 days ago.

Last updated: January 22, 2021

FIPS Code County Population Confirmed Cases % Currently Infected % Total Infected
17031 Cook 5,150,233 439,118 1.8 30.0
17043 DuPage 922,921 69,900 1.7 24.4
17097 Lake 696,535 53,926 1.6 26.4
17197 Will 690,743 58,974 1.9 27.3
17089 Kane 532,403 46,512 1.8 28.4
17111 McHenry 307,774 21,916 1.8 22.0
17201 Winnebago 282,572 26,504 1.7 29.0
17119 Madison 262,966 24,822 2.8 27.4
17163 St. Clair 259,686 22,624 2.7 26.1
17019 Champaign 209,689 15,667 1.7 22.1
17167 Sangamon 194,672 14,658 1.4 22.2
17143 Peoria 179,179 15,231 2.2 24.5
17113 McLean 171,517 13,350 2.0 22.6
17161 Rock Island 141,879 12,027 1.4 26.1
17179 Tazewell 131,803 12,087 2.4 26.1
17093 Kendall 128,990 9,819 2.1 23.6
17091 Kankakee 109,862 11,593 1.6 33.3
17099 LaSalle 108,669 9,595 2.2 25.5
17037 DeKalb 104,897 7,565 1.7 21.6
17115 Macon 104,009 8,893 1.8 25.2
17183 Vermilion 75,758 7,634 3.1 28.2
17199 Williamson 66,597 6,247 2.8 26.9
17001 Adams 65,435 7,442 2.8 32.6
17077 Jackson 56,750 4,244 2.1 22.7
17195 Whiteside 55,175 5,317 1.7 28.5
17007 Boone 53,544 5,587 1.9 32.2
17063 Grundy 51,054 4,445 2.1 25.3
17141 Ogle 50,643 4,651 2.1 27.6
17029 Coles 50,621 4,739 1.7 27.5
17095 Knox 49,699 4,640 2.5 27.0
17073 Henry 48,913 4,044 1.5 24.3
17117 Macoupin 44,926 3,913 2.9 24.9
17177 Stephenson 44,498 3,567 1.4 24.1
17055 Franklin 38,469 3,884 2.6 28.5
17203 Woodford 38,459 3,270 2.2 23.9
17081 Jefferson 37,684 3,493 3.0 27.1
17027 Clinton 37,562 5,107 3.3 40.2
17121 Marion 37,205 4,026 2.6 31.2
17105 Livingston 35,648 3,697 3.3 29.7
17133 Monroe 34,637 3,628 2.8 30.8
17057 Fulton 34,340 2,581 1.3 21.3
17103 Lee 34,096 3,076 2.2 26.4
17049 Effingham 34,008 4,334 2.8 36.6
17137 Morgan 33,658 3,274 1.6 28.5
17011 Bureau 32,628 3,019 1.3 26.9
17021 Christian 32,304 3,007 2.6 27.0
17157 Randolph 31,782 3,749 2.8 36.7
17109 McDonough 29,682 2,164 1.2 21.7
17107 Logan 28,618 3,115 2.9 31.0
17135 Montgomery 28,414 3,105 7.0 30.6
17075 Iroquois 27,114 2,605 2.1 29.1
17165 Saline 23,491 2,042 2.3 24.6
17083 Jersey 21,773 2,258 2.4 29.6
17173 Shelby 21,634 1,991 1.9 26.5
17051 Fayette 21,336 2,936 2.6 39.4
17085 Jo Daviess 21,235 1,505 1.1 20.8
17145 Perry 20,916 2,739 4.8 36.7
17041 Douglas 19,465 2,021 1.6 30.2
17033 Crawford 18,667 1,794 2.2 27.1
17067 Hancock 17,708 1,511 2.1 24.5
17045 Edgar 17,161 1,465 1.2 24.2
17187 Warren 16,844 1,591 1.1 29.7
17181 Union 16,653 2,004 3.8 36.5
17005 Bond 16,426 1,762 2.6 30.6
17147 Piatt 16,344 1,182 1.7 21.0
17191 Wayne 16,215 1,528 2.4 26.7
17101 Lawrence 15,678 2,190 3.0 39.5
17039 De Witt 15,638 1,163 3.3 20.9
17149 Pike 15,561 1,571 2.2 28.7
17159 Richland 15,513 1,553 3.0 28.1
17023 Clark 15,441 1,501 3.7 27.5
17131 Mercer 15,437 1,178 1.5 22.3
17139 Moultrie 14,501 1,387 1.7 27.5
17015 Carroll 14,305 1,451 1.6 29.5
17189 Washington 13,887 1,469 3.5 30.2
17127 Massac 13,772 1,047 2.1 21.4
17193 White 13,537 1,363 3.5 27.9
17125 Mason 13,359 1,180 2.3 25.5
17025 Clay 13,184 1,322 1.6 28.7
17061 Greene 12,969 1,257 2.3 28.1
17053 Ford 12,961 1,388 2.5 31.3
17087 Johnson 12,417 1,224 3.9 28.2
17129 Menard 12,196 902 2.7 21.0
17017 Cass 12,147 1,766 3.0 43.6
17185 Wabash 11,520 1,193 2.4 29.2
17123 Marshall 11,438 682 1.7 16.8
17035 Cumberland 10,766 1,100 3.0 29.1
17079 Jasper 9,610 1,047 3.2 33.4
17065 Hamilton 8,116 720 3.4 25.3
17169 Schuyler 6,768 632 2.5 26.5
17071 Henderson 6,646 456 1.9 20.0
17009 Brown 6,578 613 5.9 26.6
17047 Edwards 6,395 470 2.3 20.7
17003 Alexander 5,761 395 1.9 20.0
17155 Putnam 5,739 352 1.0 17.5
17175 Stark 5,342 495 1.6 26.7
17153 Pulaski 5,335 620 2.2 36.3
17171 Scott 4,951 396 2.4 22.0
17059 Gallatin 4,828 392 2.4 23.1
17013 Calhoun 4,739 446 2.7 26.8
17151 Pope 4,177 253 2.7 16.7
17069 Hardin 3,821 307 5.4 22.5