RANKING · 2020 CENSUS · 37 SHOWN OF 37

Highest Australian population share, Illinois counties · 2020

Illinois counties ranked by the share of all residents who are Australian ancestry (2020 American Community Survey). A concentration measure: Australian residents as a percentage of total population. This list covers the 37 counties in Illinois that qualify, ranked against each other statewide.

Australian 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 Australian population share by state

RANKPLACESTATEPOPAUSTRALIAN SHAREVS 2010

01Mason County, ILIL12,4110.2%+0.1 pts

02Kendall County, ILIL145,4700.1%–

03Douglas County, ILIL19,8800.1%+0.0 pts

04DeKalb County, ILIL101,8350.1%+0.0 pts

05Iroquois County, ILIL26,1500.1%+0.0 pts

06St. Clair County, ILIL250,7080.1%−0.1 pts

07Knox County, ILIL47,7670.1%+0.0 pts

08Tazewell County, ILIL130,0490.1%+0.0 pts

09Edwards County, ILIL5,8980.0%–

10Coles County, ILIL46,6070.0%–

11Cook County, ILIL5,194,6250.0%+0.0 pts

12Moultrie County, ILIL14,3710.0%–

13Clinton County, ILIL37,1280.0%+0.0 pts

14Peoria County, ILIL178,5530.0%+0.0 pts

15Lake County, ILIL719,3390.0%+0.0 pts

16DuPage County, ILIL934,2980.0%+0.0 pts

17Whiteside County, ILIL54,1210.0%–

18Vermilion County, ILIL71,2590.0%+0.0 pts

19Kane County, ILIL525,7570.0%+0.0 pts

20Macon County, ILIL99,3000.0%−0.0 pts

21Warren County, ILIL16,2220.0%–

22Morgan County, ILIL32,5150.0%–

23Wabash County, ILIL10,9070.0%–

24Champaign County, ILIL209,9720.0%−0.0 pts

25Will County, ILIL712,2530.0%+0.0 pts

26Madison County, ILIL263,1100.0%−0.0 pts

27Lee County, ILIL32,9140.0%−0.0 pts

28Logan County, ILIL27,1820.0%–

29Rock Island County, ILIL141,8690.0%+0.0 pts

30Sangamon County, ILIL194,1700.0%−0.0 pts

31Bureau County, ILIL32,5100.0%–

32Marshall County, ILIL11,4730.0%–

33Jefferson County, ILIL36,1470.0%−0.0 pts

34Henry County, ILIL48,0950.0%−0.0 pts

35Williamson County, ILIL67,2250.0%−0.0 pts

36McLean County, ILIL171,4190.0%−0.0 pts

37Kankakee County, ILIL105,5250.0%–

SHOWING 1–37 OF 37

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