Ranking of Illinois Counties By Population with Polish Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 825.04K people in Illinois with Polish ancestry. Among all Illinois counties, Cook County had the highest population with Polish ancestry (393.80K), followed by DuPage County (96.20K), and Will County (80.19K).
The chart and table below shows the top 10 counties with high number of people with Polish ancestry.
You can see similar information for other states and for other ancestry groups in Illinois.
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Related Topics: Illinois ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Ranking of Illinois Counties By Population with Polish Ancestry in 2021
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| Rank | County | Population |
|---|---|---|
| 1 | Cook County | 393798 |
| 2 | DuPage County | 96204 |
| 3 | Will County | 80195 |
| 4 | Lake County | 56472 |
| 5 | McHenry County | 36674 |
| 6 | Kane County | 34621 |
| 7 | Winnebago County | 10324 |
| 8 | Kendall County | 10063 |
| 9 | LaSalle County | 7870 |
| 10 | St. Clair County | 6407 |
| 11 | Kankakee County | 6374 |
| 12 | DeKalb County | 6260 |
| 13 | Champaign County | 6190 |
| 14 | Madison County | 6091 |
| 15 | McLean County | 5324 |
| 16 | Grundy County | 5063 |
| 17 | Boone County | 3784 |
| 18 | Sangamon County | 3645 |
| 19 | Peoria County | 3305 |
| 20 | Rock Island County | 2831 |
| 21 | Tazewell County | 2417 |
| 22 | Bureau County | 1777 |
| 23 | Macon County | 1724 |
| 24 | Ogle County | 1707 |
| 25 | Washington County | 1613 |
| 26 | Williamson County | 1531 |
| 27 | Henry County | 1487 |
| 28 | Whiteside County | 1399 |
| 29 | Vermilion County | 1316 |
| 30 | Woodford County | 1306 |
| 31 | Jackson County | 1233 |
| 32 | Perry County | 1191 |
| 33 | Lee County | 1154 |
| 34 | Livingston County | 1083 |
| 35 | Franklin County | 1080 |
| 36 | Jo Daviess County | 1052 |
| 37 | Monroe County | 1006 |
| 38 | Marion County | 978 |
| 39 | Stephenson County | 929 |
| 40 | Jefferson County | 889 |
| 41 | Clinton County | 816 |
| 42 | Macoupin County | 738 |
| 43 | Iroquois County | 697 |
| 44 | Coles County | 694 |
| 45 | Logan County | 663 |
| 46 | McDonough County | 628 |
| 47 | Adams County | 627 |
| 48 | Knox County | 600 |
| 49 | Putnam County | 560 |
| 50 | Christian County | 540 |
| 51 | Randolph County | 469 |
| 52 | Marshall County | 467 |
| 52 | Montgomery County | 467 |
| 53 | Carroll County | 443 |
| 54 | De Witt County | 426 |
| 55 | Effingham County | 421 |
| 56 | Piatt County | 409 |
| 57 | Shelby County | 372 |
| 58 | Fulton County | 340 |
| 59 | Morgan County | 323 |
| 60 | Saline County | 312 |
| 61 | Massac County | 300 |
| 62 | Menard County | 297 |
| 63 | Clay County | 288 |
| 64 | Johnson County | 285 |
| 65 | White County | 267 |
| 66 | Ford County | 228 |
| 67 | Douglas County | 222 |
| 68 | Union County | 215 |
| 69 | Clark County | 210 |
| 70 | Jersey County | 200 |
| 71 | Mason County | 196 |
| 72 | Richland County | 192 |
| 73 | Edgar County | 190 |
| 74 | Pike County | 179 |
| 75 | Crawford County | 172 |
| 76 | Warren County | 170 |
| 77 | Bond County | 155 |
| 78 | Fayette County | 151 |
| 79 | Cass County | 116 |
| 80 | Jasper County | 111 |
| 81 | Greene County | 110 |
| 81 | Lawrence County | 110 |
| 82 | Moultrie County | 109 |
| 83 | Wayne County | 102 |
| 84 | Hancock County | 100 |
| 85 | Wabash County | 98 |
| 86 | Mercer County | 91 |
| 87 | Cumberland County | 89 |
| 88 | Edwards County | 83 |
| 89 | Henderson County | 76 |
| 90 | Stark County | 74 |
| 91 | Brown County | 66 |
| 91 | Gallatin County | 66 |
| 91 | Pope County | 66 |
| 92 | Scott County | 65 |
| 93 | Calhoun County | 57 |
| 94 | Hamilton County | 56 |
| 95 | Hardin County | 52 |
| 96 | Schuyler County | 33 |
| 97 | Alexander County | 6 |
| 98 | Pulaski County | 5 |
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