RANKING · 2024 ACS · 48 SHOWN OF 48

Highest Slovene population share, Illinois counties

Illinois counties ranked by the share of all residents who are Slovene ancestry (2024 American Community Survey). A concentration measure: Slovene residents as a percentage of total population. This list covers the 48 counties in Illinois that qualify, ranked against each other statewide. The median across all 48 is 0.1%. Biggest climber in the top 100 since 2020: Jefferson County, IL, up 31 places to #17.

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RELATEDLargest American population Highest American population share Largest Arab population Highest Arab population share Largest Egyptian population Highest Egyptian population share

YEAR2010 2020 2024

Highest Slovene population share by state

RANKPLACESTATEPOPSLOVENE SHAREVS 2010

01LaSalle County, ILIL107,7730.6%+0.2 pts

02Bureau County, ILIL32,5100.5%+0.2 pts

03▲1Will County, ILIL712,2530.4%−0.2 pts

04▼1Putnam County, ILIL5,6190.3%−0.7 pts

05Kendall County, ILIL145,4700.2%−0.1 pts

06Grundy County, ILIL54,0520.2%−0.1 pts

07Lake County, ILIL719,3390.2%−0.1 pts

08▲7McHenry County, ILIL317,7510.2%+0.1 pts

09Hardin County, ILIL3,5880.1%–

10Mason County, ILIL12,4110.1%–

11▲24Jo Daviess County, ILIL21,5940.1%+0.1 pts

12▲12Livingston County, ILIL35,0570.1%0.0 pts

13Jersey County, ILIL21,1600.1%–

14▼6DuPage County, ILIL934,2980.1%0.0 pts

15▲27De Witt County, ILIL15,1180.1%–

16▲5Woodford County, ILIL38,1110.1%0.0 pts

17▲31Jefferson County, ILIL36,1470.1%–

18Shelby County, ILIL20,5760.1%–

19▼1Cook County, ILIL5,194,6250.1%0.0 pts

20▲21Whiteside County, ILIL54,1210.1%0.0 pts

21▼9Kane County, ILIL525,7570.1%0.0 pts

22▼2Logan County, ILIL27,1820.1%0.0 pts

23▼12DeKalb County, ILIL101,8350.1%0.0 pts

24▼11Sangamon County, ILIL194,1700.1%0.0 pts

25▲12Peoria County, ILIL178,5530.0%0.0 pts

26▼4Iroquois County, ILIL26,1500.0%–

27▲2Wabash County, ILIL10,9070.0%–

28▲16Marshall County, ILIL11,4730.0%−0.1 pts

29▼19Macoupin County, ILIL43,7480.0%−0.2 pts

30Menard County, ILIL11,8630.0%0.0 pts

31▲2Rock Island County, ILIL141,8690.0%0.0 pts

32▼5Franklin County, ILIL36,9160.0%−0.1 pts

33▼3Macon County, ILIL99,3000.0%0.0 pts

34▼17Kankakee County, ILIL105,5250.0%−0.1 pts

35▼26Jackson County, ILIL52,5010.0%0.0 pts

36Adams County, ILIL64,2670.0%0.0 pts

37Fayette County, ILIL20,7900.0%–

38▼10Champaign County, ILIL209,9720.0%0.0 pts

39▼3Tazewell County, ILIL130,0490.0%0.0 pts

40▲6Madison County, ILIL263,1100.0%0.0 pts

41▼16Winnebago County, ILIL283,6740.0%0.0 pts

42Williamson County, ILIL67,2250.0%0.0 pts

43▲6Lee County, ILIL32,9140.0%0.0 pts

44▼25Montgomery County, ILIL28,0760.0%−0.2 pts

45▼13Vermilion County, ILIL71,2590.0%0.0 pts

46Clinton County, ILIL37,1280.0%0.0 pts

47▼16Ogle County, ILIL51,3990.0%–

48▼32McLean County, ILIL171,4190.0%−0.1 pts

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES