RANKING · 2020 CENSUS · 66 SHOWN OF 66

Largest Romanian population, Illinois counties · 2020

Illinois counties ranked by the number of residents who are Romanian 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 66 counties in Illinois that qualify, ranked against each other statewide. The median across all 66 is 25.

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 POPULATIONVS 2010

01Cook County, ILIL5,194,62521,874+6%

02Lake County, ILIL719,3393,874+13%

03DuPage County, ILIL934,2982,943+1%

04Kane County, ILIL525,7571,320−31%

05Will County, ILIL712,2531,291+30%

06McHenry County, ILIL317,751671−38%

07Kendall County, ILIL145,470581+7%

08DeKalb County, ILIL101,835437+76%

09LaSalle County, ILIL107,773224−33%

10Madison County, ILIL263,110224−19%

11Winnebago County, ILIL283,674219+12%

12St. Clair County, ILIL250,708178−30%

13Peoria County, ILIL178,553148+3%

14McLean County, ILIL171,419132+1%

15Champaign County, ILIL209,972114−55%

16Ford County, ILIL13,21683+118%

17Rock Island County, ILIL141,86982−54%

18Macon County, ILIL99,30074+825%

19Lee County, ILIL32,91463+2%

20Whiteside County, ILIL54,12163–

21Jackson County, ILIL52,50158−21%

22Jo Daviess County, ILIL21,59457+128%

23Sangamon County, ILIL194,17046−2%

24Tazewell County, ILIL130,04945−46%

25Coles County, ILIL46,60744+2%

26Boone County, ILIL53,56844–

27Kankakee County, ILIL105,52540−47%

28Macoupin County, ILIL43,74837+363%

29Mercer County, ILIL15,22932+220%

30Adams County, ILIL64,26730+400%

31McDonough County, ILIL25,91628+17%

32Douglas County, ILIL19,88026–

33Vermilion County, ILIL71,25925+47%

34Henry County, ILIL48,09524+100%

35Effingham County, ILIL34,51923–

36Clark County, ILIL15,11422–

37Ogle County, ILIL51,39920+25%

38Lawrence County, ILIL13,79019–

39Bureau County, ILIL32,51019+111%

40Williamson County, ILIL67,22518+29%

41De Witt County, ILIL15,11814–

42Putnam County, ILIL5,61914–

43Monroe County, ILIL34,84013−55%

44Stephenson County, ILIL43,22013−75%

45Grundy County, ILIL54,05211−78%

46Iroquois County, ILIL26,15011+22%

47Randolph County, ILIL29,92111–

48Warren County, ILIL16,22211−58%

49Carroll County, ILIL15,41910−64%

50Menard County, ILIL11,8639–

51Schuyler County, ILIL6,6579–

52Logan County, ILIL27,1828–

53Pike County, ILIL14,2317–

54Shelby County, ILIL20,5767−42%

55Stark County, ILIL5,3197+250%

56Franklin County, ILIL36,9165–

57Jefferson County, ILIL36,1475−72%

58Massac County, ILIL13,5024–

59Edgar County, ILIL16,3233–

60Jasper County, ILIL9,0323−94%

61Crawford County, ILIL18,6482–

62Christian County, ILIL33,4432–

63Knox County, ILIL47,7672−94%

64Morgan County, ILIL32,5152−89%

65Perry County, ILIL20,1602−93%

66Fulton County, ILIL32,9011−96%

SHOWING 1–66 OF 66

Download CSV (full list, 66 rows)

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