RANKING · 2020 CENSUS · 33 SHOWN OF 33

Highest Brazilian population share, Illinois counties · 2020

Illinois counties ranked by the share of all residents who are Brazilian ancestry (2020 American Community Survey). A concentration measure: Brazilian residents as a percentage of total population. This list covers the 33 counties in Illinois that qualify, ranked against each other statewide.

Brazilian Americans: full group profile →

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RELATEDLargest American population Highest American population share Largest Arab population Highest Arab population share Largest Egyptian population Highest Egyptian population share

YEAR2010 2020 2024

Highest Brazilian population share by state

RANKPLACESTATEPOPBRAZILIAN SHAREVS 2010

01Boone County, ILIL53,5680.6%+0.6 pts

02Piatt County, ILIL16,7910.2%–

03Menard County, ILIL11,8630.2%–

04Champaign County, ILIL209,9720.1%−0.1 pts

05Kane County, ILIL525,7570.1%+0.0 pts

06Lake County, ILIL719,3390.1%+0.0 pts

07Cook County, ILIL5,194,6250.1%+0.0 pts

08DeKalb County, ILIL101,8350.1%–

09McLean County, ILIL171,4190.1%+0.1 pts

10McHenry County, ILIL317,7510.1%−0.0 pts

11Peoria County, ILIL178,5530.1%−0.0 pts

12Jackson County, ILIL52,5010.1%–

13Lee County, ILIL32,9140.0%–

14Crawford County, ILIL18,6480.0%–

15Bureau County, ILIL32,5100.0%–

16Mercer County, ILIL15,2290.0%–

17DuPage County, ILIL934,2980.0%−0.1 pts

18Winnebago County, ILIL283,6740.0%+0.0 pts

19Calhoun County, ILIL4,3000.0%−0.1 pts

20Fulton County, ILIL32,9010.0%–

21Will County, ILIL712,2530.0%−0.0 pts

22Franklin County, ILIL36,9160.0%–

23Adams County, ILIL64,2670.0%+0.0 pts

24Hancock County, ILIL16,8030.0%–

25McDonough County, ILIL25,9160.0%–

26Sangamon County, ILIL194,1700.0%+0.0 pts

27Rock Island County, ILIL141,8690.0%+0.0 pts

28Kendall County, ILIL145,4700.0%+0.0 pts

29Madison County, ILIL263,1100.0%−0.0 pts

30Macon County, ILIL99,3000.0%+0.0 pts

31St. Clair County, ILIL250,7080.0%+0.0 pts

32LaSalle County, ILIL107,7730.0%−0.0 pts

33Williamson County, ILIL67,2250.0%–

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS