RANKING · 2010 CENSUS · 68 SHOWN OF 68

Highest Portuguese population share, Illinois counties · 2010

Illinois counties ranked by the share of all residents who are Portuguese ancestry (2010 American Community Survey). A concentration measure: Portuguese residents as a percentage of total population. This list covers the 68 counties in Illinois that qualify, ranked against each other statewide. The median across all 68 is 0.1%.

Portuguese 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

RANKPLACESTATEPOPPORTUGUESE SHAREVS –

01Morgan County, ILIL32,5151.3%–

02Hardin County, ILIL3,5880.9%–

03Scott County, ILIL4,8660.8%–

04Cass County, ILIL12,4630.5%–

05Clark County, ILIL15,1140.4%–

06Sangamon County, ILIL194,1700.3%–

07Greene County, ILIL11,3130.3%–

08Pope County, ILIL3,6720.3%–

09Macoupin County, ILIL43,7480.3%–

10Jersey County, ILIL21,1600.2%–

11Shelby County, ILIL20,5760.2%–

12Grundy County, ILIL54,0520.2%–

13Lee County, ILIL32,9140.2%–

14Menard County, ILIL11,8630.2%–

15Schuyler County, ILIL6,6570.2%–

16Knox County, ILIL47,7670.2%–

17Whiteside County, ILIL54,1210.2%–

18Perry County, ILIL20,1600.2%–

19LaSalle County, ILIL107,7730.1%–

20Williamson County, ILIL67,2250.1%–

21McHenry County, ILIL317,7510.1%–

22Stark County, ILIL5,3190.1%–

23Clinton County, ILIL37,1280.1%–

24Coles County, ILIL46,6070.1%–

25Vermilion County, ILIL71,2590.1%–

26Henderson County, ILIL5,9840.1%–

27Ogle County, ILIL51,3990.1%–

28Lake County, ILIL719,3390.1%–

29Ford County, ILIL13,2160.1%–

30Gallatin County, ILIL4,6160.1%–

31Woodford County, ILIL38,1110.1%–

32Kankakee County, ILIL105,5250.1%–

33Macon County, ILIL99,3000.1%–

34Piatt County, ILIL16,7910.1%–

35DuPage County, ILIL934,2980.1%–

36Champaign County, ILIL209,9720.1%–

37DeKalb County, ILIL101,8350.1%–

38McLean County, ILIL171,4190.1%–

39Logan County, ILIL27,1820.1%–

40Stephenson County, ILIL43,2200.1%–

41Mason County, ILIL12,4110.1%–

42Kane County, ILIL525,7570.1%–

43Tazewell County, ILIL130,0490.1%–

44Adams County, ILIL64,2670.1%–

45Marion County, ILIL36,3820.1%–

46Will County, ILIL712,2530.1%–

47Douglas County, ILIL19,8800.1%–

48Henry County, ILIL48,0950.1%–

49St. Clair County, ILIL250,7080.1%–

50Saline County, ILIL22,7720.1%–

51Kendall County, ILIL145,4700.1%–

52Peoria County, ILIL178,5530.1%–

53Madison County, ILIL263,1100.1%–

54Cook County, ILIL5,194,6250.0%–

55Boone County, ILIL53,5680.0%–

56McDonough County, ILIL25,9160.0%–

57Jackson County, ILIL52,5010.0%–

58Bureau County, ILIL32,5100.0%–

59Effingham County, ILIL34,5190.0%–

60Iroquois County, ILIL26,1500.0%–

61Rock Island County, ILIL141,8690.0%–

62Monroe County, ILIL34,8400.0%–

63Washington County, ILIL13,5640.0%–

64Jo Daviess County, ILIL21,5940.0%–

65Winnebago County, ILIL283,6740.0%–

66Livingston County, ILIL35,0570.0%–

67Christian County, ILIL33,4430.0%–

68Cumberland County, ILIL10,2080.0%–

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