Illinois Citizen Population By County in 2022 (ACS-5Yrs)
Updated on August 29, 2024.
Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2022, the citizen population for Illinois was 11,912,210 and represented 93.37% of the total Illinois population.
Among all Illinois counties, Cook had the highest citizen population (4.71M), followed by DuPage (854.60K), and Will (659.70K).
In terms of percentages, Alexander had the highest percentage of its population being citizens (100.00%), followed by Calhoun (100.00%), and Pulaski (99.90%).
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.
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Data Source: US Census - ACS 5-Year CVAP, 2022 Census.
Illinois Citizen Population By County in 2022
Illinois Citizen Population By County in 2022
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| County | Citizen Population | % of County Population |
|---|---|---|
| Cook | 4711050 | 90.16 |
| DuPage | 854595 | 91.84 |
| Will | 659695 | 94.68 |
| Lake | 649260 | 91.04 |
| Kane | 473510 | 91.54 |
| McHenry | 298405 | 95.91 |
| Winnebago | 271420 | 95.37 |
| Madison | 263270 | 99.16 |
| St. Clair | 253430 | 98.69 |
| Sangamon | 193470 | 98.65 |
| Champaign | 189075 | 91.55 |
| Peoria | 174955 | 96.56 |
| McLean | 164575 | 96.08 |
| Rock Island | 137365 | 95.51 |
| Tazewell | 130230 | 99.20 |
| Kendall | 126475 | 95.24 |
| LaSalle | 107400 | 98.09 |
| Kankakee | 104885 | 97.64 |
| Macon | 102045 | 98.56 |
| DeKalb | 97005 | 96.35 |
| Vermilion | 73575 | 99.27 |
| Williamson | 66285 | 98.76 |
| Adams | 65325 | 99.60 |
| Whiteside | 54720 | 98.47 |
| Grundy | 51915 | 98.65 |
| Jackson | 51310 | 96.49 |
| Boone | 50650 | 94.74 |
| Ogle | 50630 | 97.99 |
| Henry | 48885 | 99.45 |
| Knox | 48480 | 97.45 |
| Coles | 46735 | 99.28 |
| Macoupin | 44715 | 99.58 |
| Stephenson | 43985 | 98.89 |
| Woodford | 38165 | 99.35 |
| Franklin | 37690 | 99.68 |
| Marion | 37295 | 99.33 |
| Jefferson | 36825 | 99.41 |
| Clinton | 36495 | 98.64 |
| Livingston | 35520 | 99.30 |
| Monroe | 34850 | 99.84 |
| Effingham | 34170 | 98.77 |
| Lee | 33755 | 98.64 |
| Christian | 33735 | 99.53 |
| Fulton | 33505 | 99.45 |
| Morgan | 32760 | 99.64 |
| Bureau | 32635 | 98.28 |
| Randolph | 29880 | 98.24 |
| Montgomery | 28230 | 99.58 |
| Logan | 27880 | 99.48 |
| McDonough | 27100 | 99.01 |
| Iroquois | 26495 | 97.97 |
| Saline | 23530 | 99.45 |
| Jo Daviess | 21825 | 99.48 |
| Jersey | 21325 | 99.37 |
| Fayette | 21300 | 99.23 |
| Shelby | 20935 | 99.50 |
| Perry | 20840 | 99.26 |
| Douglas | 19405 | 98.43 |
| Crawford | 18645 | 99.55 |
| Hancock | 17460 | 99.32 |
| Union | 16925 | 98.86 |
| Edgar | 16810 | 99.76 |
| Piatt | 16665 | 99.79 |
| Bond | 16600 | 99.10 |
| Warren | 16235 | 96.87 |
| Wayne | 15890 | 98.54 |
| Mercer | 15660 | 99.81 |
| Richland | 15575 | 99.11 |
| Carroll | 15475 | 99.23 |
| Clark | 15425 | 99.74 |
| De Witt | 15385 | 99.03 |
| Lawrence | 15120 | 98.82 |
| Pike | 14695 | 99.46 |
| Moultrie | 14470 | 99.59 |
| Massac | 14030 | 99.26 |
| White | 13795 | 99.71 |
| Washington | 13740 | 99.71 |
| Ford | 13320 | 98.78 |
| Clay | 13225 | 99.81 |
| Johnson | 13205 | 99.17 |
| Mason | 13060 | 99.89 |
| Menard | 12230 | 99.55 |
| Greene | 11990 | 99.79 |
| Cass | 11935 | 92.13 |
| Marshall | 11650 | 99.23 |
| Wabash | 11215 | 99.07 |
| Cumberland | 10350 | 99.09 |
| Jasper | 9215 | 99.14 |
| Hamilton | 7995 | 99.81 |
| Schuyler | 6815 | 99.06 |
| Henderson | 6360 | 99.77 |
| Brown | 6300 | 99.45 |
| Edwards | 6160 | 99.68 |
| Putnam | 5615 | 99.73 |
| Stark | 5330 | 98.80 |
| Alexander | 5260 | 100.00 |
| Pulaski | 5170 | 99.90 |
| Gallatin | 4950 | 99.70 |
| Scott | 4885 | 99.69 |
| Calhoun | 4470 | 100.00 |
| Pope | 3775 | 99.34 |
| Hardin | 3655 | 99.73 |