RANKING · 2010 CENSUS · 30 SHOWN OF 30

Highest Brazilian population share, Illinois counties · 2010

Illinois counties ranked by the share of all residents who are Brazilian ancestry (2010 American Community Survey). A concentration measure: Brazilian residents as a percentage of total population. This list covers the 30 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 –

01Hardin County, ILIL3,5880.5%–

02Bond County, ILIL16,9590.2%–

03Massac County, ILIL13,5020.2%–

04Champaign County, ILIL209,9720.2%–

05Johnson County, ILIL13,3630.1%–

06DuPage County, ILIL934,2980.1%–

07Calhoun County, ILIL4,3000.1%–

08Peoria County, ILIL178,5530.1%–

09McHenry County, ILIL317,7510.1%–

10Jersey County, ILIL21,1600.1%–

11Mason County, ILIL12,4110.1%–

12Kane County, ILIL525,7570.1%–

13Cook County, ILIL5,194,6250.1%–

14Will County, ILIL712,2530.0%–

15Lake County, ILIL719,3390.0%–

16Boone County, ILIL53,5680.0%–

17Madison County, ILIL263,1100.0%–

18Rock Island County, ILIL141,8690.0%–

19Jefferson County, ILIL36,1470.0%–

20Kankakee County, ILIL105,5250.0%–

21Cass County, ILIL12,4630.0%–

22Clinton County, ILIL37,1280.0%–

23LaSalle County, ILIL107,7730.0%–

24Winnebago County, ILIL283,6740.0%–

25Macon County, ILIL99,3000.0%–

26Sangamon County, ILIL194,1700.0%–

27Kendall County, ILIL145,4700.0%–

28McLean County, ILIL171,4190.0%–

29Adams County, ILIL64,2670.0%–

30St. Clair County, ILIL250,7080.0%–

SHOWING 1–30 OF 30

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UPDATED 2026-07-05 · DATA: US CENSUS BUREAU DECENNIAL CENSUS