RANKING · 2024 ACS · 35 SHOWN OF 35

Largest Peruvian population, Illinois counties

Illinois counties ranked by the number of residents who are Peruvian origin, from the 2024 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 35 counties in Illinois that qualify, ranked against each other statewide. The median across all 35 is 30. Biggest climber in the top 100 since 2020: Boone County, IL, up 20 places to #12.

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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 POPULATIONVS 2010

01Cook County, ILIL5,194,6259,835+43%

02DuPage County, ILIL934,298945+71%

03Lake County, ILIL719,339791+22%

04▲1McHenry County, ILIL317,751605+123%

05▼1Will County, ILIL712,253538+34%

06Kane County, ILIL525,7574210%

07▲3Kendall County, ILIL145,470314+108%

08▲4McLean County, ILIL171,419193–

09Cass County, ILIL12,463160–

10▼1Madison County, ILIL263,110145+1971%

11▼4Champaign County, ILIL209,972144+43%

12▲20Boone County, ILIL53,568136−43%

13▲4St. Clair County, ILIL250,708116+480%

14▼1Stephenson County, ILIL43,22090–

15▲5LaSalle County, ILIL107,77346−56%

16▼5Winnebago County, ILIL283,67446−72%

17▼9Rock Island County, ILIL141,86939+290%

18Marion County, ILIL36,38230–

19▲14McDonough County, ILIL25,91625–

20▲7Ogle County, ILIL51,39922–

21Massac County, ILIL13,50220–

22▲8Woodford County, ILIL38,11120–

23▲6Knox County, ILIL47,76715–

24▼3Macoupin County, ILIL43,74815–

25▲3Whiteside County, ILIL54,12114+56%

26▼3Peoria County, ILIL178,55313–

27▼5Tazewell County, ILIL130,04913–

28▼14Jackson County, ILIL52,50112−83%

29▼4Sangamon County, ILIL194,17010−82%

30Montgomery County, ILIL28,0768–

31Lee County, ILIL32,9146−54%

32Jo Daviess County, ILIL21,5945–

33Union County, ILIL16,6562–

34▲1Jasper County, ILIL9,0321–

35▼19Warren County, ILIL16,2221–

SHOWING 1–35 OF 35

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