Illinois Male and Female Gender Population By County in 2021 (ACS-5Yrs)
Updated on February 28, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, the Illinois population consisted of 6.33M males and 6.49M females.
Male Population: Cook had the highest male population (2.57M), followed by DuPage (461.85K), and Lake (358.91K).
Female Population: Cook had the highest female population (2.70M), followed by DuPage (472.24K), and Lake (355.57K).
The charts and table below shows the male and female population for each county.
You can see similar information for other states and by state for the United States.
Related Topics: Illinois ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census - ACS 5-Year Estimates, 2021 Census.
Illinois Male Population By County in 2021
Illinois Female Population By County in 2021
Illinois Male and Female Population By County in 2021
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| County | Male Population | Female Population |
|---|---|---|
| Adams | 32414 | 33464 |
| Alexander | 2652 | 2836 |
| Bond | 8877 | 7927 |
| Boone | 26786 | 26806 |
| Brown | 4067 | 2263 |
| Bureau | 16417 | 16921 |
| Calhoun | 2334 | 2203 |
| Carroll | 7842 | 7744 |
| Cass | 6562 | 6496 |
| Champaign | 103293 | 103290 |
| Christian | 17451 | 16587 |
| Clark | 7765 | 7822 |
| Clay | 6645 | 6668 |
| Clinton | 19318 | 17730 |
| Coles | 23096 | 24446 |
| Cook | 2570478 | 2694920 |
| Crawford | 10107 | 8718 |
| Cumberland | 5369 | 5159 |
| DeKalb | 50067 | 50855 |
| De Witt | 7851 | 7802 |
| Douglas | 9777 | 9931 |
| DuPage | 461851 | 472243 |
| Edgar | 8432 | 8566 |
| Edwards | 3079 | 3154 |
| Effingham | 17305 | 17271 |
| Fayette | 11408 | 10106 |
| Ford | 6754 | 6835 |
| Franklin | 18912 | 19156 |
| Fulton | 17869 | 16153 |
| Gallatin | 2490 | 2548 |
| Greene | 6177 | 6010 |
| Grundy | 26245 | 26119 |
| Hamilton | 3883 | 4138 |
| Hancock | 8955 | 8795 |
| Hardin | 1948 | 1752 |
| Henderson | 3237 | 3248 |
| Henry | 24620 | 24792 |
| Iroquois | 13415 | 13947 |
| Jackson | 26485 | 27191 |
| Jasper | 4703 | 4621 |
| Jefferson | 19409 | 17953 |
| Jersey | 10627 | 10906 |
| Jo Daviess | 11122 | 10873 |
| Johnson | 7259 | 5979 |
| Kane | 259680 | 258968 |
| Kankakee | 53567 | 54537 |
| Kendall | 64996 | 65761 |
| Knox | 25526 | 24667 |
| Lake | 358911 | 355573 |
| LaSalle | 55773 | 54213 |
| Lawrence | 8788 | 6677 |
| Lee | 18332 | 16041 |
| Livingston | 18283 | 17619 |
| Logan | 13919 | 14319 |
| McDonough | 13365 | 14378 |
| McHenry | 155410 | 155339 |
| McLean | 83625 | 87830 |
| Macon | 50215 | 54116 |
| Macoupin | 22341 | 22811 |
| Madison | 130389 | 135723 |
| Marion | 18530 | 19251 |
| Marshall | 5875 | 5906 |
| Mason | 6575 | 6650 |
| Massac | 6887 | 7393 |
| Menard | 6020 | 6323 |
| Mercer | 7972 | 7807 |
| Monroe | 17258 | 17474 |
| Montgomery | 15173 | 13309 |
| Morgan | 16687 | 16502 |
| Moultrie | 7184 | 7450 |
| Ogle | 25810 | 25977 |
| Peoria | 88947 | 93492 |
| Perry | 11656 | 9502 |
| Piatt | 8222 | 8442 |
| Pike | 7457 | 7466 |
| Pope | 1811 | 2009 |
| Pulaski | 2547 | 2732 |
| Putnam | 2865 | 2773 |
| Randolph | 17311 | 13321 |
| Richland | 7834 | 8042 |
| Rock Island | 71714 | 72980 |
| St. Clair | 125532 | 133065 |
| Saline | 11712 | 12157 |
| Sangamon | 94933 | 101826 |
| Schuyler | 3803 | 3150 |
| Scott | 2443 | 2480 |
| Shelby | 10440 | 10720 |
| Stark | 2692 | 2744 |
| Stephenson | 21975 | 22842 |
| Tazewell | 65184 | 66793 |
| Union | 8724 | 8535 |
| Vermilion | 37518 | 37435 |
| Wabash | 5658 | 5756 |
| Warren | 8329 | 8558 |
| Washington | 6936 | 6891 |
| Wayne | 8083 | 8167 |
| White | 6892 | 7067 |
| Whiteside | 28065 | 27867 |
| Will | 347369 | 349034 |
| Williamson | 33700 | 33571 |
| Winnebago | 140109 | 145362 |
| Woodford | 19271 | 19300 |