Illinois Citizen Population By County in 2013 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2013, the citizen population for Illinois was 11,892,795 and represented 92.56% of the total Illinois population.

Among all Illinois counties, Cook had the highest citizen population (4.62M), followed by DuPage (844.70K), and Will (640.71K).

In terms of percentages, Gallatin had the highest percentage of its population being citizens (100.00%), followed by Hardin (100.00%), and Stark (99.92%).

The chart and table below shows the citizen population of each county and the percentage of each county's population that were citizens.

You can see similar information for other states and by state for the United States.

You may also be interested in:
Illinois Citizen Voting-age Population By County in 2013

Data Source: US Census - ACS 5-Year (CVAP).

See this for other years:

Illinois Citizen Population By County in 2013

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County	Citizen Population	% of County Population
Cook	4619675	88.63
DuPage	844700	91.54
Will	640710	94.27
Lake	634625	90.39
Kane	456720	88.11
McHenry	292470	94.94
Winnebago	280820	95.72
St. Clair	265805	98.83
Madison	265315	98.86
Sangamon	194760	98.23
Champaign	186110	91.94
Peoria	181700	97.11
McLean	164015	95.78
Rock Island	140550	95.30
Tazewell	134810	99.31
Kendall	111870	96.14
LaSalle	111040	98.01
Kankakee	109620	97.02
Macon	108920	98.79
DeKalb	100335	95.72
Vermilion	80245	98.89
Adams	66615	99.20
Williamson	65855	98.87
Jackson	57770	96.20
Whiteside	57310	98.56
Coles	53260	99.13
Knox	51750	98.49
Ogle	51750	97.48
Boone	50705	93.78
Henry	49675	98.84
Grundy	49060	97.99
Macoupin	47250	99.56
Stephenson	46920	99.17
Franklin	39270	99.49
Marion	38925	99.63
Woodford	38720	99.52
Jefferson	38465	99.21
Livingston	38410	99.29
Clinton	37665	99.41
Fulton	36410	98.86
Lee	35105	98.79
Morgan	35055	98.96
Christian	34515	99.61
Effingham	34125	99.56
Bureau	33795	97.69
Monroe	33130	99.85
Randolph	33020	99.40
McDonough	31905	98.02
Logan	29790	98.72
Montgomery	29625	99.15
Iroquois	28825	97.89
Saline	24865	99.66
Jersey	22705	99.37
Jo Daviess	22215	98.30
Shelby	22215	99.78
Perry	21975	99.08
Fayette	21950	99.37
Crawford	19590	99.42
Douglas	19350	97.24
Hancock	18860	99.53
Edgar	18265	99.59
Bond	17525	99.21
Union	17470	98.59
Warren	17005	95.75
Wayne	16605	99.58
Piatt	16500	99.28
De Witt	16465	99.73
Lawrence	16335	97.81
Pike	16275	99.63
Mercer	16255	99.57
Clark	16200	99.48
Richland	16120	99.41
Massac	15260	99.87
Carroll	14980	98.55
Moultrie	14780	99.40
Washington	14565	99.59
White	14545	99.42
Mason	14445	99.55
Ford	13930	99.57
Greene	13760	99.86
Clay	13670	99.45
Menard	12660	99.80
Johnson	12525	98.90
Cass	12465	92.13
Marshall	12305	98.80
Wabash	11585	97.76
Cumberland	10925	99.18
Jasper	9590	99.07
Hamilton	8385	99.64
Alexander	7935	99.44
Schuyler	7470	99.73
Henderson	7135	99.30
Brown	6735	97.54
Edwards	6680	99.78
Pulaski	5960	98.76
Stark	5935	99.92
Putnam	5880	99.24
Gallatin	5515	100.00
Scott	5280	99.81
Calhoun	5005	98.91
Pope	4365	99.54
Hardin	4275	100.00