RANKING · 2010 CENSUS · 30 SHOWN OF 30

Highest Peruvian population share, Illinois counties · 2010

Illinois counties ranked by the share of all residents who are Peruvian origin (2010 American Community Survey). A concentration measure: Peruvian residents as a percentage of total population. This list covers the 30 counties in Illinois that qualify, ranked against each other statewide. The median across all 30 is 0.1%.

Peruvian Americans: full group profile →

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RELATEDLargest Mexican population Highest Mexican population share Largest Puerto Rican population Highest Puerto Rican population share Largest Cuban population Highest Cuban population share

YEAR2010 2020 2024

RANKPLACESTATEPOPPERUVIAN SHAREVS –

01Boone County, ILIL53,5680.4%–

02Scott County, ILIL4,8660.2%–

03DeKalb County, ILIL101,8350.2%–

04Kendall County, ILIL145,4700.1%–

05Cook County, ILIL5,194,6250.1%–

06Vermilion County, ILIL71,2590.1%–

07Jackson County, ILIL52,5010.1%–

08Lake County, ILIL719,3390.1%–

09LaSalle County, ILIL107,7730.1%–

10Williamson County, ILIL67,2250.1%–

11McHenry County, ILIL317,7510.1%–

12Kane County, ILIL525,7570.1%–

13Bureau County, ILIL32,5100.1%–

14Adams County, ILIL64,2670.1%–

15DuPage County, ILIL934,2980.1%–

16Will County, ILIL712,2530.1%–

17Winnebago County, ILIL283,6740.1%–

18Macon County, ILIL99,3000.1%–

19Champaign County, ILIL209,9720.1%–

20Fulton County, ILIL32,9010.0%–

21Lee County, ILIL32,9140.0%–

22Sangamon County, ILIL194,1700.0%–

23Christian County, ILIL33,4430.0%–

24Monroe County, ILIL34,8400.0%–

25Randolph County, ILIL29,9210.0%–

26Whiteside County, ILIL54,1210.0%–

27Saline County, ILIL22,7720.0%–

28St. Clair County, ILIL250,7080.0%–

29Rock Island County, ILIL141,8690.0%–

30Madison County, ILIL263,1100.0%–

SHOWING 1–30 OF 30

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