RANKING · 2020 CENSUS · 37 SHOWN OF 37

Largest Australian population, Illinois counties · 2020

Illinois counties ranked by the number of residents who are Australian ancestry, from the 2020 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 37 counties in Illinois that qualify, ranked against each other statewide. The median across all 37 is 18.

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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

Largest Australian population by state

RANKPLACESTATEPOPAUSTRALIAN POPULATIONVS 2010

01Cook County, ILIL5,194,6251,809+85%

02DuPage County, ILIL934,298236+4%

03Lake County, ILIL719,339183+7%

04Kendall County, ILIL145,470160–

05St. Clair County, ILIL250,708155−56%

06Kane County, ILIL525,757102+137%

07DeKalb County, ILIL101,83589+68%

08Will County, ILIL712,25388+14%

09Tazewell County, ILIL130,04968+6%

10Peoria County, ILIL178,55348+243%

11Madison County, ILIL263,11031−60%

12Mason County, ILIL12,41131+94%

13Champaign County, ILIL209,97228−39%

14Knox County, ILIL47,76727+200%

15Coles County, ILIL46,60722–

16Douglas County, ILIL19,88022+29%

17Sangamon County, ILIL194,17019−81%

18Macon County, ILIL99,30019−58%

19Iroquois County, ILIL26,15018+125%

20Vermilion County, ILIL71,25917+89%

21Rock Island County, ILIL141,86914+40%

22Whiteside County, ILIL54,12113–

23Clinton County, ILIL37,12810+400%

24McLean County, ILIL171,4199−50%

25Morgan County, ILIL32,5156–

26Kankakee County, ILIL105,5255–

27Lee County, ILIL32,9144−80%

28Moultrie County, ILIL14,3714–

29Williamson County, ILIL67,22540%

30Bureau County, ILIL32,5103–

31Edwards County, ILIL5,8983–

32Henry County, ILIL48,0953−50%

33Jefferson County, ILIL36,1473−80%

34Logan County, ILIL27,1823–

35Warren County, ILIL16,2223–

36Wabash County, ILIL10,9072–

37Marshall County, ILIL11,4731–

SHOWING 1–37 OF 37

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS