RANKING · 2020 CENSUS · 73 SHOWN OF 73

Highest Portuguese population share, Illinois counties · 2020

Illinois counties ranked by the share of all residents who are Portuguese ancestry (2023 American Community Survey). A concentration measure: Portuguese residents as a percentage of total population. This list covers the 73 counties in Illinois that qualify, ranked against each other statewide.

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

RANKPLACESTATEPOPPORTUGUESE SHAREVS 2000

01Morgan County, ILIL32,5150.6%–

02Scott County, ILIL4,8660.5%–

03Cass County, ILIL12,4630.4%–

04Ford County, ILIL13,2160.4%–

05Greene County, ILIL11,3130.4%–

06Washington County, ILIL13,5640.4%–

07Piatt County, ILIL16,7910.3%–

08Whiteside County, ILIL54,1210.3%–

09Sangamon County, ILIL194,1700.2%–

10Gallatin County, ILIL4,6160.2%–

11Richland County, ILIL15,2190.2%–

12Monroe County, ILIL34,8400.2%–

13Jackson County, ILIL52,5010.2%–

14Effingham County, ILIL34,5190.2%–

15Fulton County, ILIL32,9010.2%–

16McHenry County, ILIL317,7510.1%–

17Coles County, ILIL46,6070.1%–

18Lake County, ILIL719,3390.1%–

19LaSalle County, ILIL107,7730.1%–

20Randolph County, ILIL29,9210.1%–

21Douglas County, ILIL19,8800.1%–

22Williamson County, ILIL67,2250.1%–

23McLean County, ILIL171,4190.1%–

24Rock Island County, ILIL141,8690.1%–

25Warren County, ILIL16,2220.1%–

26St. Clair County, ILIL250,7080.1%–

27DuPage County, ILIL934,2980.1%–

28Adams County, ILIL64,2670.1%–

29Crawford County, ILIL18,6480.1%–

30Cumberland County, ILIL10,2080.1%–

31De Witt County, ILIL15,1180.1%–

32Montgomery County, ILIL28,0760.1%–

33Knox County, ILIL47,7670.1%–

34Bureau County, ILIL32,5100.1%–

35Kane County, ILIL525,7570.1%–

36Cook County, ILIL5,194,6250.1%–

37Pike County, ILIL14,2310.1%–

38Champaign County, ILIL209,9720.1%–

39Madison County, ILIL263,1100.1%–

40Will County, ILIL712,2530.1%–

41Hancock County, ILIL16,8030.1%–

42Macoupin County, ILIL43,7480.1%–

43Henry County, ILIL48,0950.0%–

44Christian County, ILIL33,4430.0%–

45DeKalb County, ILIL101,8350.0%–

46Tazewell County, ILIL130,0490.0%–

47Stephenson County, ILIL43,2200.0%–

48Peoria County, ILIL178,5530.0%–

49Fayette County, ILIL20,7900.0%–

50Menard County, ILIL11,8630.0%–

51Edgar County, ILIL16,3230.0%–

52Kankakee County, ILIL105,5250.0%–

53Hamilton County, ILIL7,8590.0%–

54Macon County, ILIL99,3000.0%–

55Kendall County, ILIL145,4700.0%–

56Logan County, ILIL27,1820.0%–

57Union County, ILIL16,6560.0%–

58Winnebago County, ILIL283,6740.0%–

59Ogle County, ILIL51,3990.0%–

60Iroquois County, ILIL26,1500.0%–

61Jersey County, ILIL21,1600.0%–

62Jefferson County, ILIL36,1470.0%–

63Mason County, ILIL12,4110.0%–

64Carroll County, ILIL15,4190.0%–

65McDonough County, ILIL25,9160.0%–

66Mercer County, ILIL15,2290.0%–

67Wayne County, ILIL15,8820.0%–

68Clinton County, ILIL37,1280.0%–

69Woodford County, ILIL38,1110.0%–

70White County, ILIL13,2500.0%–

71Livingston County, ILIL35,0570.0%–

72Marion County, ILIL36,3820.0%–

73Franklin County, ILIL36,9160.0%–

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UPDATED 2026-06-06 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES