RANKING · 2020 CENSUS · 38 SHOWN OF 38

Highest Iranian population share, Illinois counties · 2020

Illinois counties ranked by the share of all residents who are Iranian ancestry (2020 American Community Survey). A concentration measure: Iranian residents as a percentage of total population. This list covers the 38 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 Iranian population share by state

RANKPLACESTATEPOPIRANIAN SHAREVS 2010

01DuPage County, ILIL934,2980.2%+0.0 pts

02Richland County, ILIL15,2190.2%–

03Champaign County, ILIL209,9720.1%−0.0 pts

04Lake County, ILIL719,3390.1%+0.0 pts

05Cook County, ILIL5,194,6250.1%+0.0 pts

06Coles County, ILIL46,6070.1%+0.1 pts

07Washington County, ILIL13,5640.1%–

08Edwards County, ILIL5,8980.1%+0.1 pts

09Jackson County, ILIL52,5010.1%−0.3 pts

10Wayne County, ILIL15,8820.1%–

11Whiteside County, ILIL54,1210.1%–

12Kane County, ILIL525,7570.1%+0.0 pts

13McDonough County, ILIL25,9160.1%–

14Madison County, ILIL263,1100.0%+0.0 pts

15Winnebago County, ILIL283,6740.0%+0.0 pts

16Will County, ILIL712,2530.0%−0.0 pts

17Peoria County, ILIL178,5530.0%−0.0 pts

18McLean County, ILIL171,4190.0%+0.0 pts

19Tazewell County, ILIL130,0490.0%–

20Henry County, ILIL48,0950.0%–

21Knox County, ILIL47,7670.0%+0.0 pts

22Sangamon County, ILIL194,1700.0%+0.0 pts

23Morgan County, ILIL32,5150.0%−0.0 pts

24Shelby County, ILIL20,5760.0%–

25Jersey County, ILIL21,1600.0%–

26McHenry County, ILIL317,7510.0%+0.0 pts

27Kendall County, ILIL145,4700.0%−0.0 pts

28Effingham County, ILIL34,5190.0%−0.2 pts

29Stephenson County, ILIL43,2200.0%–

30St. Clair County, ILIL250,7080.0%–

31Williamson County, ILIL67,2250.0%–

32Rock Island County, ILIL141,8690.0%−0.0 pts

33Crawford County, ILIL18,6480.0%–

34Christian County, ILIL33,4430.0%–

35Adams County, ILIL64,2670.0%–

36DeKalb County, ILIL101,8350.0%−0.2 pts

37LaSalle County, ILIL107,7730.0%+0.0 pts

38Marion County, ILIL36,3820.0%–

SHOWING 1–38 OF 38

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