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 (2020 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. The median across all 73 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 2010

01Morgan County, ILIL32,5150.6%−0.6 pts

02Scott County, ILIL4,8660.5%−0.3 pts

03Cass County, ILIL12,4630.4%−0.1 pts

04Ford County, ILIL13,2160.4%+0.3 pts

05Greene County, ILIL11,3130.4%+0.1 pts

06Washington County, ILIL13,5640.4%+0.4 pts

07Piatt County, ILIL16,7910.3%+0.2 pts

08Whiteside County, ILIL54,1210.3%+0.1 pts

09Sangamon County, ILIL194,1700.2%−0.1 pts

10Gallatin County, ILIL4,6160.2%+0.1 pts

11Richland County, ILIL15,2190.2%–

12Monroe County, ILIL34,8400.2%+0.2 pts

13Jackson County, ILIL52,5010.2%+0.1 pts

14Effingham County, ILIL34,5190.2%+0.1 pts

15Fulton County, ILIL32,9010.2%–

16McHenry County, ILIL317,7510.1%0.0 pts

17Coles County, ILIL46,6070.1%0.0 pts

18Lake County, ILIL719,3390.1%0.0 pts

19LaSalle County, ILIL107,7730.1%0.0 pts

20Randolph County, ILIL29,9210.1%–

21Douglas County, ILIL19,8800.1%0.0 pts

22Williamson County, ILIL67,2250.1%0.0 pts

23McLean County, ILIL171,4190.1%0.0 pts

24Rock Island County, ILIL141,8690.1%+0.1 pts

25Warren County, ILIL16,2220.1%–

26St. Clair County, ILIL250,7080.1%0.0 pts

27DuPage County, ILIL934,2980.1%0.0 pts

28Adams County, ILIL64,2670.1%0.0 pts

29Crawford County, ILIL18,6480.1%–

30Cumberland County, ILIL10,2080.1%+0.1 pts

31De Witt County, ILIL15,1180.1%–

32Montgomery County, ILIL28,0760.1%–

33Knox County, ILIL47,7670.1%−0.1 pts

34Bureau County, ILIL32,5100.1%0.0 pts

35Kane County, ILIL525,7570.1%0.0 pts

36Cook County, ILIL5,194,6250.1%0.0 pts

37Pike County, ILIL14,2310.1%–

38Champaign County, ILIL209,9720.1%0.0 pts

39Madison County, ILIL263,1100.1%0.0 pts

40Will County, ILIL712,2530.1%0.0 pts

41Hancock County, ILIL16,8030.1%–

42Macoupin County, ILIL43,7480.1%−0.2 pts

43Henry County, ILIL48,0950.0%0.0 pts

44Christian County, ILIL33,4430.0%0.0 pts

45DeKalb County, ILIL101,8350.0%0.0 pts

46Tazewell County, ILIL130,0490.0%0.0 pts

47Stephenson County, ILIL43,2200.0%0.0 pts

48Peoria County, ILIL178,5530.0%0.0 pts

49Fayette County, ILIL20,7900.0%–

50Menard County, ILIL11,8630.0%−0.1 pts

51Edgar County, ILIL16,3230.0%–

52Kankakee County, ILIL105,5250.0%−0.1 pts

53Hamilton County, ILIL7,8590.0%–

54Macon County, ILIL99,3000.0%−0.1 pts

55Kendall County, ILIL145,4700.0%0.0 pts

56Logan County, ILIL27,1820.0%0.0 pts

57Union County, ILIL16,6560.0%–

58Winnebago County, ILIL283,6740.0%0.0 pts

59Ogle County, ILIL51,3990.0%−0.1 pts

60Iroquois County, ILIL26,1500.0%0.0 pts

61Jersey County, ILIL21,1600.0%−0.2 pts

62Jefferson County, ILIL36,1470.0%–

63Mason County, ILIL12,4110.0%−0.1 pts

64Carroll County, ILIL15,4190.0%–

65McDonough County, ILIL25,9160.0%0.0 pts

66Mercer County, ILIL15,2290.0%–

67Wayne County, ILIL15,8820.0%–

68Clinton County, ILIL37,1280.0%−0.1 pts

69Woodford County, ILIL38,1110.0%−0.1 pts

70White County, ILIL13,2500.0%–

71Livingston County, ILIL35,0570.0%0.0 pts

72Marion County, ILIL36,3820.0%−0.1 pts

73Franklin County, ILIL36,9160.0%–

SHOWING 1–73 OF 73

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