Ranking of Illinois Counties By Population with Slavic Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 5.35K people in Illinois with Slavic ancestry. Among all Illinois counties, Cook County had the highest population with Slavic ancestry (1.86K), followed by Lake County (551), and Will County (551).

The chart and table below shows the top 10 counties with high number of people with Slavic ancestry.

You can see similar information for other states and for other ancestry groups in Illinois.

Data Source: US Census Bureau.
Ranking of Illinois Counties By Population with Slavic Ancestry in 2021
Cook County
Lake County
Will County
DuPage County
McHenry County
Kane County
Champaign County
Madison County
LaSalle County
Kendall County
Ranking of Illinois Counties By Population with Slavic Ancestry in 2021
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Rank County Population
1 Cook County 1861
2 Lake County 551
2 Will County 551
3 DuPage County 443
4 McHenry County 326
5 Kane County 222
6 Champaign County 146
7 Madison County 141
8 LaSalle County 131
9 Kendall County 114
10 Sangamon County 104
11 McLean County 78
12 Winnebago County 59
13 Peoria County 56
14 DeKalb County 49
15 Williamson County 46
16 Rock Island County 45
17 Macon County 41
18 Grundy County 40
19 St. Clair County 35
20 Kankakee County 32
21 Livingston County 27
22 Bureau County 21
22 Jo Daviess County 21
23 Monroe County 20
23 Montgomery County 20
24 Tazewell County 19
25 Vermilion County 17
26 Edgar County 16
26 Stephenson County 16
27 Effingham County 13
27 Moultrie County 13
28 Randolph County 11
29 Shelby County 9
30 Bond County 7
30 Macoupin County 7
30 Mercer County 7
30 Whiteside County 7
31 White County 6
32 Fulton County 5
32 McDonough County 5
33 Marshall County 4
34 Clinton County 3
35 Coles County 2
35 Greene County 2
35 Lee County 2
36 De Witt County 1