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: March 8, 2021

FIPS Code	County	Population	Confirmed Cases	% Currently Infected	% Total Infected
17031	Cook	5,150,233	478,884	0.4	32.0
17043	DuPage	922,921	77,882	0.5	26.6
17097	Lake	696,535	60,155	0.5	28.7
17197	Will	690,743	65,885	0.6	29.8
17089	Kane	532,403	51,237	0.5	30.7
17111	McHenry	307,774	24,669	0.6	24.3
17201	Winnebago	282,572	28,470	0.3	30.8
17119	Madison	262,966	28,259	0.6	30.9
17163	St. Clair	259,686	25,752	0.7	29.3
17019	Champaign	209,689	18,282	0.7	25.3
17167	Sangamon	194,672	16,285	0.4	24.3
17143	Peoria	179,179	17,017	0.5	27.1
17113	McLean	171,517	14,738	0.5	24.7
17161	Rock Island	141,879	13,203	0.4	28.2
17179	Tazewell	131,803	13,677	0.7	29.2
17093	Kendall	128,990	11,206	0.6	26.3
17091	Kankakee	109,862	12,605	0.7	35.7
17099	LaSalle	108,669	10,924	0.7	28.7
17037	DeKalb	104,897	8,372	0.5	23.6
17115	Macon	104,009	9,531	0.3	26.8
17183	Vermilion	75,758	8,646	0.7	31.7
17199	Williamson	66,597	6,866	0.4	29.3
17001	Adams	65,435	8,041	0.4	35.1
17077	Jackson	56,750	4,623	0.2	24.6
17195	Whiteside	55,175	5,958	0.5	31.5
17007	Boone	53,544	5,945	0.3	34.0
17063	Grundy	51,054	5,209	0.9	29.1
17141	Ogle	50,643	5,075	0.6	29.7
17029	Coles	50,621	5,251	0.6	30.0
17095	Knox	49,699	5,026	0.3	29.2
17073	Henry	48,913	4,360	0.3	26.0
17117	Macoupin	44,926	4,385	0.4	27.7
17177	Stephenson	44,498	4,122	0.5	27.3
17055	Franklin	38,469	4,167	0.3	30.6
17203	Woodford	38,459	3,709	0.7	27.1
17081	Jefferson	37,684	3,998	0.5	30.7
17027	Clinton	37,562	5,583	0.3	43.8
17121	Marion	37,205	4,280	0.2	33.1
17105	Livingston	35,648	4,269	1.0	33.8
17133	Monroe	34,637	4,092	0.6	34.3
17057	Fulton	34,340	2,903	0.5	23.6
17103	Lee	34,096	3,383	0.5	28.7
17049	Effingham	34,008	4,508	0.2	38.0
17137	Morgan	33,658	3,618	0.5	31.0
17011	Bureau	32,628	3,335	0.6	29.2
17021	Christian	32,304	3,336	0.5	29.5
17157	Randolph	31,782	3,985	0.3	38.7
17109	McDonough	29,682	2,340	0.3	23.3
17107	Logan	28,618	3,315	0.2	32.9
17135	Montgomery	28,414	3,543	0.9	34.6
17075	Iroquois	27,114	2,789	0.2	30.9
17165	Saline	23,491	2,339	0.7	27.7
17083	Jersey	21,773	2,499	0.4	32.8
17173	Shelby	21,634	2,163	0.5	28.5
17051	Fayette	21,336	3,071	0.2	41.2
17085	Jo Daviess	21,235	1,616	0.3	22.2
17145	Perry	20,916	3,074	0.8	41.3
17041	Douglas	19,465	2,477	1.8	36.0
17033	Crawford	18,667	2,013	0.3	30.4
17067	Hancock	17,708	1,685	0.4	27.2
17045	Edgar	17,161	1,556	0.3	25.7
17187	Warren	16,844	1,666	0.1	30.8
17181	Union	16,653	2,207	0.4	39.7
17005	Bond	16,426	1,918	0.6	33.2
17147	Piatt	16,344	1,343	0.6	23.4
17191	Wayne	16,215	1,692	0.5	29.3
17101	Lawrence	15,678	2,319	0.7	41.6
17039	De Witt	15,638	1,284	0.3	23.1
17149	Pike	15,561	1,701	0.5	31.0
17159	Richland	15,513	1,637	0.1	29.7
17023	Clark	15,441	1,688	0.5	30.8
17131	Mercer	15,437	1,289	0.4	24.0
17139	Moultrie	14,501	1,503	0.4	29.6
17015	Carroll	14,305	1,582	0.5	32.0
17189	Washington	13,887	1,588	0.4	32.5
17127	Massac	13,772	1,285	0.8	25.9
17193	White	13,537	1,614	0.5	32.9
17125	Mason	13,359	1,290	0.5	27.6
17025	Clay	13,184	1,436	0.3	30.9
17061	Greene	12,969	1,387	0.2	30.5
17053	Ford	12,961	1,604	1.2	35.2
17087	Johnson	12,417	1,355	0.3	30.9
17129	Menard	12,196	1,044	0.4	24.2
17017	Cass	12,147	1,898	0.6	46.4
17185	Wabash	11,520	1,305	0.3	31.9
17123	Marshall	11,438	851	0.4	20.6
17035	Cumberland	10,766	1,204	0.6	31.7
17079	Jasper	9,610	1,113	0.3	35.3
17065	Hamilton	8,116	796	0.4	27.5
17169	Schuyler	6,768	682	0.4	28.6
17071	Henderson	6,646	504	0.4	21.8
17009	Brown	6,578	666	0.5	28.6
17047	Edwards	6,395	528	0.3	23.0
17003	Alexander	5,761	453	0.5	22.6
17155	Putnam	5,739	422	0.7	20.5
17175	Stark	5,342	543	0.5	28.9
17153	Pulaski	5,335	671	0.2	38.9
17171	Scott	4,951	449	0.2	25.4
17059	Gallatin	4,828	438	0.3	25.7
17013	Calhoun	4,739	482	0.5	28.9
17151	Pope	4,177	284	0.2	18.8
17069	Hardin	3,821	348	0.4	25.2