RANKING · 2010 CENSUS · 61 SHOWN OF 61

Highest Romanian population share, Illinois counties · 2010

Illinois counties ranked by the share of all residents who are Romanian ancestry (2010 American Community Survey). A concentration measure: Romanian residents as a percentage of total population. This list covers the 61 counties in Illinois that qualify, ranked against each other statewide. The median across all 61 is 0.1%.

Romanian Americans: full group profile →

IllinoisAll states All rankings

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

RANKPLACESTATEPOPROMANIAN SHAREVS –

01Jasper County, ILIL9,0320.5%–

02Kendall County, ILIL145,4700.5%–

03Lake County, ILIL719,3390.5%–

04Cook County, ILIL5,194,6250.4%–

05Kane County, ILIL525,7570.4%–

06McHenry County, ILIL317,7510.4%–

07Woodford County, ILIL38,1110.3%–

08DuPage County, ILIL934,2980.3%–

09LaSalle County, ILIL107,7730.3%–

10Ford County, ILIL13,2160.3%–

11DeKalb County, ILIL101,8350.2%–

12Carroll County, ILIL15,4190.2%–

13Lee County, ILIL32,9140.2%–

14Will County, ILIL712,2530.1%–

15Warren County, ILIL16,2220.1%–

16Champaign County, ILIL209,9720.1%–

17Perry County, ILIL20,1600.1%–

18Clinton County, ILIL37,1280.1%–

19Jackson County, ILIL52,5010.1%–

20Rock Island County, ILIL141,8690.1%–

21Jo Daviess County, ILIL21,5940.1%–

22Stephenson County, ILIL43,2200.1%–

23Grundy County, ILIL54,0520.1%–

24Madison County, ILIL263,1100.1%–

25St. Clair County, ILIL250,7080.1%–

26Monroe County, ILIL34,8400.1%–

27Cass County, ILIL12,4630.1%–

28Coles County, ILIL46,6070.1%–

29McLean County, ILIL171,4190.1%–

30Peoria County, ILIL178,5530.1%–

31McDonough County, ILIL25,9160.1%–

32Cumberland County, ILIL10,2080.1%–

33Fayette County, ILIL20,7900.1%–

34Knox County, ILIL47,7670.1%–

35Kankakee County, ILIL105,5250.1%–

36Winnebago County, ILIL283,6740.1%–

37Fulton County, ILIL32,9010.1%–

38Tazewell County, ILIL130,0490.1%–

39Mercer County, ILIL15,2290.1%–

40Shelby County, ILIL20,5760.1%–

41Morgan County, ILIL32,5150.1%–

42Jefferson County, ILIL36,1470.0%–

43Greene County, ILIL11,3130.0%–

44Marion County, ILIL36,3820.0%–

45Stark County, ILIL5,3190.0%–

46Iroquois County, ILIL26,1500.0%–

47Ogle County, ILIL51,3990.0%–

48Montgomery County, ILIL28,0760.0%–

49Bureau County, ILIL32,5100.0%–

50Sangamon County, ILIL194,1700.0%–

51Henry County, ILIL48,0950.0%–

52Marshall County, ILIL11,4730.0%–

53Williamson County, ILIL67,2250.0%–

54Vermilion County, ILIL71,2590.0%–

55Livingston County, ILIL35,0570.0%–

56Macoupin County, ILIL43,7480.0%–

57Hancock County, ILIL16,8030.0%–

58Adams County, ILIL64,2670.0%–

59Jersey County, ILIL21,1600.0%–

60Macon County, ILIL99,3000.0%–

61Mason County, ILIL12,4110.0%–

SHOWING 1–61 OF 61

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