RANKING · 2024 ACS · 39 SHOWN OF 39

Highest Iranian population share, Illinois counties

Illinois counties ranked by the share of all residents who are Iranian ancestry (2024 American Community Survey). A concentration measure: Iranian residents as a percentage of total population. This list covers the 39 counties in Illinois that qualify, ranked against each other statewide. The median across all 39 is 0.0%. Biggest climber in the top 100 since 2020: Effingham County, IL, up 18 places to #10.

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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

01▲2Champaign County, ILIL209,9720.2%+0.1 pts

02▲7Jackson County, ILIL52,5010.2%−0.1 pts

03Franklin County, ILIL36,9160.2%–

04▲2Coles County, ILIL46,6070.2%+0.2 pts

05▼4DuPage County, ILIL934,2980.2%0.0 pts

06▼1Cook County, ILIL5,194,6250.1%0.0 pts

07▼3Lake County, ILIL719,3390.1%0.0 pts

08▲3Whiteside County, ILIL54,1210.1%–

09▲8Peoria County, ILIL178,5530.1%0.0 pts

10▲18Effingham County, ILIL34,5190.1%−0.1 pts

11▲1Kane County, ILIL525,7570.1%0.0 pts

12▲9Knox County, ILIL47,7670.1%+0.1 pts

13Massac County, ILIL13,5020.1%–

14Clinton County, ILIL37,1280.1%0.0 pts

15Lee County, ILIL32,9140.1%–

16▼3McDonough County, ILIL25,9160.1%–

17Jo Daviess County, ILIL21,5940.1%–

18▼2Will County, ILIL712,2530.0%0.0 pts

19▲1Henry County, ILIL48,0950.0%–

20▼6Madison County, ILIL263,1100.0%0.0 pts

21▲1Sangamon County, ILIL194,1700.0%0.0 pts

22▼4McLean County, ILIL171,4190.0%0.0 pts

23▲13DeKalb County, ILIL101,8350.0%−0.2 pts

24Logan County, ILIL27,1820.0%–

25▼2Morgan County, ILIL32,5150.0%0.0 pts

26▼7Tazewell County, ILIL130,0490.0%–

27Iroquois County, ILIL26,1500.0%–

28Vermilion County, ILIL71,2590.0%0.0 pts

29▼22Washington County, ILIL13,5640.0%–

30▲7LaSalle County, ILIL107,7730.0%0.0 pts

31▲1Rock Island County, ILIL141,8690.0%0.0 pts

32Macon County, ILIL99,3000.0%0.0 pts

33Kankakee County, ILIL105,5250.0%0.0 pts

34▲1Adams County, ILIL64,2670.0%–

35Saline County, ILIL22,7720.0%0.0 pts

36▼10McHenry County, ILIL317,7510.0%0.0 pts

37▼7St. Clair County, ILIL250,7080.0%–

38▼23Winnebago County, ILIL283,6740.0%0.0 pts

39▼12Kendall County, ILIL145,4700.0%0.0 pts

SHOWING 1–39 OF 39

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES