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 (2024 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. The median across all 35 is 0.0%. Biggest climber in the top 100 since 2020: Boone County, IL, up 27 places to #2.

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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 2010

01Cass County, ILIL12,4631.3%–

02▲27Boone County, ILIL53,5680.3%−0.2 pts

03▲10Kendall County, ILIL145,4700.2%+0.1 pts

04▲2Stephenson County, ILIL43,2200.2%–

05McHenry County, ILIL317,7510.2%+0.1 pts

06▼4Cook County, ILIL5,194,6250.2%+0.1 pts

07Massac County, ILIL13,5020.1%–

08▲9McLean County, ILIL171,4190.1%–

09▲1Lake County, ILIL719,3390.1%0.0 pts

10▼1DuPage County, ILIL934,2980.1%0.0 pts

11▲11McDonough County, ILIL25,9160.1%–

12▲2Kane County, ILIL525,7570.1%0.0 pts

13Marion County, ILIL36,3820.1%–

14▼2Will County, ILIL712,2530.1%0.0 pts

15▼11Champaign County, ILIL209,9720.1%0.0 pts

16Madison County, ILIL263,1100.1%+0.1 pts

17▲3Woodford County, ILIL38,1110.1%–

18▲12St. Clair County, ILIL250,7080.0%0.0 pts

19▲4Ogle County, ILIL51,3990.0%–

20▲5LaSalle County, ILIL107,7730.0%0.0 pts

21▼3Macoupin County, ILIL43,7480.0%–

22▲5Knox County, ILIL47,7670.0%–

23Montgomery County, ILIL28,0760.0%–

24▼16Rock Island County, ILIL141,8690.0%0.0 pts

25▲1Whiteside County, ILIL54,1210.0%0.0 pts

26Jo Daviess County, ILIL21,5940.0%–

27▼16Jackson County, ILIL52,5010.0%−0.1 pts

28Lee County, ILIL32,9140.0%0.0 pts

29▼10Winnebago County, ILIL283,6740.0%0.0 pts

30Union County, ILIL16,6560.0%–

31Jasper County, ILIL9,0320.0%–

32▲1Tazewell County, ILIL130,0490.0%–

33▲1Peoria County, ILIL178,5530.0%–

34▼33Warren County, ILIL16,2220.0%–

35Sangamon County, ILIL194,1700.0%0.0 pts

SHOWING 1–35 OF 35

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