RANKING · 2020 CENSUS · 38 SHOWN OF 38

Largest Iranian population, Illinois counties · 2020

Illinois counties ranked by the number of residents who are Iranian 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 38 counties in Illinois that qualify, ranked against each other statewide. The median across all 38 is 25.

Iranian Americans: full group profile →

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SAME RANKING BYCities States Metros

RELATEDLargest American population Highest American population share Largest Arab population Highest Arab population share Largest Egyptian population Highest Egyptian population share

YEAR2010 2020 2024

RANKPLACESTATEPOPIRANIAN POPULATIONVS 2010

01Cook County, ILIL5,194,6256,081+14%

02DuPage County, ILIL934,2981,628+18%

03Lake County, ILIL719,339993+8%

04Will County, ILIL712,253314−32%

05Champaign County, ILIL209,972310−1%

06Kane County, ILIL525,757306+87%

07Winnebago County, ILIL283,674132+408%

08Madison County, ILIL263,110124+1140%

09Peoria County, ILIL178,55375−13%

10McHenry County, ILIL317,75169+5%

11McLean County, ILIL171,41963+31%

12Coles County, ILIL46,60757+375%

13Sangamon County, ILIL194,17056+60%

14St. Clair County, ILIL250,70849–

15Jackson County, ILIL52,50148−76%

16Tazewell County, ILIL130,04945–

17Whiteside County, ILIL54,12135–

18Kendall County, ILIL145,47028+12%

19Richland County, ILIL15,21925–

20Rock Island County, ILIL141,86923−53%

21McDonough County, ILIL25,91616–

22Henry County, ILIL48,09515–

23Knox County, ILIL47,76715+150%

24Washington County, ILIL13,56415–

25Wayne County, ILIL15,88211–

26Williamson County, ILIL67,22511–

27Adams County, ILIL64,2679–

28Morgan County, ILIL32,5159−25%

29Stephenson County, ILIL43,2209–

30DeKalb County, ILIL101,8358−96%

31Effingham County, ILIL34,5197−91%

32Edwards County, ILIL5,8986+200%

33LaSalle County, ILIL107,7736+50%

34Christian County, ILIL33,4435–

35Jersey County, ILIL21,1605–

36Shelby County, ILIL20,5765–

37Crawford County, ILIL18,6483–

38Marion County, ILIL36,3821–

SHOWING 1–38 OF 38

Download CSV (full list, 38 rows)

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