RANKING · 2024 ACS · 35 SHOWN OF 35

Highest Peruvian population share, Illinois counties

Illinois counties ranked by the share of all residents who are Peruvian origin (2023 American Community Survey). A concentration measure: Peruvian residents as a percentage of total population. This list covers the 35 counties in Illinois that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

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 2000

01Cass County, ILIL12,4631.3%–

02Boone County, ILIL53,5680.3%–

03Kendall County, ILIL145,4700.2%–

04Stephenson County, ILIL43,2200.2%–

05McHenry County, ILIL317,7510.2%–

06Cook County, ILIL5,194,6250.2%–

07Massac County, ILIL13,5020.1%–

08McLean County, ILIL171,4190.1%–

09Lake County, ILIL719,3390.1%–

10DuPage County, ILIL934,2980.1%–

11McDonough County, ILIL25,9160.1%–

12Kane County, ILIL525,7570.1%–

13Marion County, ILIL36,3820.1%–

14Will County, ILIL712,2530.1%–

15Champaign County, ILIL209,9720.1%–

16Madison County, ILIL263,1100.1%–

17Woodford County, ILIL38,1110.1%–

18St. Clair County, ILIL250,7080.0%–

19Ogle County, ILIL51,3990.0%–

20LaSalle County, ILIL107,7730.0%–

21Macoupin County, ILIL43,7480.0%–

22Knox County, ILIL47,7670.0%–

23Montgomery County, ILIL28,0760.0%–

24Rock Island County, ILIL141,8690.0%–

25Whiteside County, ILIL54,1210.0%–

26Jo Daviess County, ILIL21,5940.0%–

27Jackson County, ILIL52,5010.0%–

28Lee County, ILIL32,9140.0%–

29Winnebago County, ILIL283,6740.0%–

30Union County, ILIL16,6560.0%–

31Jasper County, ILIL9,0320.0%–

32Tazewell County, ILIL130,0490.0%–

33Peoria County, ILIL178,5530.0%–

34Warren County, ILIL16,2220.0%–

35Sangamon County, ILIL194,1700.0%–

SHOWING 1–35 OF 35

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