Illinois Immigrant or Foreign-Born Population By County in 2021 (ACS-5Yrs)
Based on the US Census ACS-5Yrs estimates, in 2021, the total immigrant or foreign-born population in Illinois was 1.80M which was 14.07% of Illinois's population. Among all Illinois counties, Cook had the highest immigrant population (1.10M) and immigrants constituted 20.93% of its population, followed by DuPage (pop: 182.70K, perc: 19.56%), and then Lake (pop: 133.28K, perc: 18.65%).
On the other hand, the counties with the least number of immigrant population were: Gallatin (pop: 15, perc: 0.30%), Hardin (pop: 19, perc: 0.51%), and Calhoun (pop: 20, perc: 0.44%),
The chart and table below shows the immigrant or foreign-born population of each county and the percentage of each county's population that are immigrants.
You can see similar information for other states and by state for the United States.
| County | Immigrant Population | % of County Population |
|---|---|---|
| Adams | 875 | 1.33 |
| Alexander | 28 | 0.51 |
| Bond | 327 | 1.95 |
| Boone | 4967 | 9.27 |
| Brown | 179 | 2.83 |
| Bureau | 1188 | 3.56 |
| Calhoun | 20 | 0.44 |
| Carroll | 338 | 2.17 |
| Cass | 1492 | 11.43 |
| Champaign | 25613 | 12.40 |
| Christian | 426 | 1.25 |
| Clark | 105 | 0.67 |
| Clay | 30 | 0.23 |
| Clinton | 804 | 2.17 |
| Coles | 896 | 1.89 |
| Cook | 1102013 | 20.93 |
| Crawford | 222 | 1.18 |
| Cumberland | 113 | 1.07 |
| DeKalb | 7153 | 7.09 |
| De Witt | 270 | 1.73 |
| Douglas | 590 | 2.99 |
| DuPage | 182700 | 19.56 |
| Edgar | 175 | 1.03 |
| Edwards | 44 | 0.71 |
| Effingham | 756 | 2.19 |
| Fayette | 334 | 1.55 |
| Ford | 228 | 1.68 |
| Franklin | 337 | 0.89 |
| Fulton | 397 | 1.17 |
| Gallatin | 15 | 0.30 |
| Greene | 43 | 0.35 |
| Grundy | 2170 | 4.14 |
| Hamilton | 64 | 0.80 |
| Hancock | 286 | 1.61 |
| Hardin | 19 | 0.51 |
| Henderson | 51 | 0.79 |
| Henry | 785 | 1.59 |
| Iroquois | 898 | 3.28 |
| Jackson | 3073 | 5.73 |
| Jasper | 118 | 1.27 |
| Jefferson | 692 | 1.85 |
| Jersey | 254 | 1.18 |
| Jo Daviess | 503 | 2.29 |
| Johnson | 149 | 1.13 |
| Kane | 88632 | 17.09 |
| Kankakee | 5270 | 4.88 |
| Kendall | 12122 | 9.27 |
| Knox | 1575 | 3.14 |
| Lake | 133276 | 18.65 |
| LaSalle | 3629 | 3.30 |
| Lawrence | 255 | 1.65 |
| Lee | 872 | 2.54 |
| Livingston | 668 | 1.86 |
| Logan | 408 | 1.45 |
| McDonough | 822 | 2.96 |
| McHenry | 27349 | 8.80 |
| McLean | 11902 | 6.94 |
| Macon | 2514 | 2.41 |
| Macoupin | 420 | 0.93 |
| Madison | 5613 | 2.11 |
| Marion | 379 | 1.00 |
| Marshall | 166 | 1.41 |
| Mason | 87 | 0.66 |
| Massac | 156 | 1.09 |
| Menard | 153 | 1.24 |
| Mercer | 225 | 1.43 |
| Monroe | 446 | 1.28 |
| Montgomery | 435 | 1.53 |
| Morgan | 366 | 1.10 |
| Moultrie | 113 | 0.77 |
| Ogle | 1929 | 3.73 |
| Peoria | 11435 | 6.27 |
| Perry | 254 | 1.20 |
| Piatt | 147 | 0.88 |
| Pike | 112 | 0.75 |
| Pope | 39 | 1.02 |
| Pulaski | 45 | 0.85 |
| Putnam | 77 | 1.37 |
| Randolph | 760 | 2.48 |
| Richland | 269 | 1.69 |
| Rock Island | 11880 | 8.21 |
| St. Clair | 7914 | 3.06 |
| Saline | 212 | 0.89 |
| Sangamon | 5955 | 3.03 |
| Schuyler | 98 | 1.41 |
| Scott | 57 | 1.16 |
| Shelby | 221 | 1.04 |
| Stark | 135 | 2.48 |
| Stephenson | 819 | 1.83 |
| Tazewell | 2174 | 1.65 |
| Union | 404 | 2.34 |
| Vermilion | 1587 | 2.12 |
| Wabash | 258 | 2.26 |
| Warren | 955 | 5.66 |
| Washington | 152 | 1.10 |
| Wayne | 254 | 1.56 |
| White | 159 | 1.14 |
| Whiteside | 1739 | 3.11 |
| Will | 86042 | 12.36 |
| Williamson | 1272 | 1.89 |
| Winnebago | 25719 | 9.01 |
| Woodford | 668 | 1.73 |
