RANKING · 2010 CENSUS · 32 SHOWN OF 32

Highest Bulgarian population share, Illinois counties · 2010

Illinois counties ranked by the share of all residents who are Bulgarian ancestry (2023 American Community Survey). A concentration measure: Bulgarian residents as a percentage of total population. This list covers the 32 counties in Illinois that qualify, ranked against each other statewide.

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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 Bulgarian population share by state

RANKPLACESTATEPOPBULGARIAN SHAREVS 2000

01Madison County, ILIL263,1100.2%–

02Cook County, ILIL5,194,6250.2%–

03DuPage County, ILIL934,2980.1%–

04Piatt County, ILIL16,7910.1%–

05Lake County, ILIL719,3390.1%–

06Clark County, ILIL15,1140.1%–

07Jefferson County, ILIL36,1470.1%–

08Edgar County, ILIL16,3230.1%–

09Williamson County, ILIL67,2250.1%–

10DeKalb County, ILIL101,8350.1%–

11Franklin County, ILIL36,9160.1%–

12Kane County, ILIL525,7570.1%–

13St. Clair County, ILIL250,7080.1%–

14Henry County, ILIL48,0950.1%–

15Hancock County, ILIL16,8030.1%–

16Will County, ILIL712,2530.1%–

17Peoria County, ILIL178,5530.0%–

18Jackson County, ILIL52,5010.0%–

19Tazewell County, ILIL130,0490.0%–

20Champaign County, ILIL209,9720.0%–

21Marion County, ILIL36,3820.0%–

22Iroquois County, ILIL26,1500.0%–

23McHenry County, ILIL317,7510.0%–

24Knox County, ILIL47,7670.0%–

25Macon County, ILIL99,3000.0%–

26Kankakee County, ILIL105,5250.0%–

27LaSalle County, ILIL107,7730.0%–

28Sangamon County, ILIL194,1700.0%–

29Rock Island County, ILIL141,8690.0%–

30McLean County, ILIL171,4190.0%–

31Livingston County, ILIL35,0570.0%–

32Winnebago County, ILIL283,6740.0%–

SHOWING 1–32 OF 32

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