RANKING · 2024 ACS · 28 SHOWN OF 28

Highest Australian population share, Illinois counties

Illinois counties ranked by the share of all residents who are Australian ancestry (2024 American Community Survey). A concentration measure: Australian residents as a percentage of total population. This list covers the 28 counties in Illinois that qualify, ranked against each other statewide.

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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

01De Witt County, ILIL15,1180.2%–

02Christian County, ILIL33,4430.2%+0.1 pts

03McDonough County, ILIL25,9160.1%–

04Effingham County, ILIL34,5190.1%–

05Scott County, ILIL4,8660.1%–

06Lake County, ILIL719,3390.0%+0.0 pts

07DeKalb County, ILIL101,8350.0%−0.0 pts

08Cook County, ILIL5,194,6250.0%+0.0 pts

09Clark County, ILIL15,1140.0%–

10LaSalle County, ILIL107,7730.0%+0.0 pts

11Madison County, ILIL263,1100.0%+0.0 pts

12McHenry County, ILIL317,7510.0%+0.0 pts

13DuPage County, ILIL934,2980.0%+0.0 pts

14Kane County, ILIL525,7570.0%+0.0 pts

15McLean County, ILIL171,4190.0%+0.0 pts

16Williamson County, ILIL67,2250.0%+0.0 pts

17Iroquois County, ILIL26,1500.0%−0.0 pts

18Knox County, ILIL47,7670.0%+0.0 pts

19Kendall County, ILIL145,4700.0%–

20Sangamon County, ILIL194,1700.0%−0.0 pts

21Douglas County, ILIL19,8800.0%−0.1 pts

22Will County, ILIL712,2530.0%−0.0 pts

23Winnebago County, ILIL283,6740.0%–

24Rock Island County, ILIL141,8690.0%+0.0 pts

25Peoria County, ILIL178,5530.0%+0.0 pts

26Macon County, ILIL99,3000.0%−0.0 pts

27Grundy County, ILIL54,0520.0%−0.0 pts

28St. Clair County, ILIL250,7080.0%−0.1 pts

SHOWING 1–28 OF 28

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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES