Swiss Population in Illinois by County : 2025 Ranking & Insights

According to the latest U.S. Census estimates, the Swiss population in Illinois totals 30,845. Cook County contains the largest Swiss community with 7,595 residents, followed by DuPage County (2,465), Kane County (1,514), and others contributing to this statewide total. This demographic analysis ranks all counties in Illinois by their Swiss populations, offering insights into local community distribution and broader settlement trends.

Top 5 counties with the largest Swiss population in Illinois

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  • 1
    Cook County
    Swiss population in Cook County is 7,595
    0.15% of Cook County population is Swiss
  • 2
    DuPage County
    Swiss population in DuPage County is 2,465
    0.27% of DuPage County population is Swiss
  • 3
    Kane County
    Swiss population in Kane County is 1,514
    0.29% of Kane County population is Swiss
  • 4
    Lake County
    Swiss population in Lake County is 1,426
    0.20% of Lake County population is Swiss
  • 5
    Madison County
    Swiss population in Madison County is 1,415
    0.53% of Madison County population is Swiss

Overview of Swiss population in Illinois

  • Population Count and Percentage: American Community Survey data indicate Illinois contains 30,845 Swiss residents (0.24% of 12.7 million total state population), positioning the state at the 81st percentile nationally among U.S. states for Swiss population concentrations.
  • Comparison to State and National Averages: U.S. Census surveys show Illinois's Swiss demographic representation of 0.24% remains below the national average of 0.26%, positioning the state below typical U.S. demographic distribution patterns.
  • Share of Total National Population: Official American Community Survey records show Illinois hosts 30,845 Swiss residents, representing 3.6% of the nation's total Swiss population of 858,721, establishing the state as a significant demographic concentration center within national boundaries.
  • Population Density per Square Mile: U.S. Census Bureau's American Community Survey data indicates Illinois's density of 0.56 Swiss Americans per square mile exceeds the national average of 0.24 per square mile by two and one-quarter times, establishing the state as a significant concentration center for Swiss demographic communities.
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102 Counties in Illinois Ranked by Swiss Population

View Methodology
American Community Survey data [1] show Swiss population in Illinois distributed across multiple counties, led by Cook County, DuPage County, Kane County, and Lake County, while several other counties recorded no residents identified as Americans of Swiss ancestry. The table below provides broader statistics, including total population figures, density measures, and demographic distributions based on current ACS data for all counties included in this analysis*.
counties in Illinois ranked by Swiss population count
Rank by Swiss Population
County
Swiss Population
% of Total County Population
% of Total Illinois Swiss Population
5 Year Rank Trend
1 Cook County 7,595 0.15% 24.62%
2 DuPage County 2,465 0.27% 7.99%
3 Kane County 1,514 0.29% 4.91%
4 Lake County 1,426 0.20% 4.62%
5 Madison County 1,415 0.53% 4.59%
6 Winnebago County 1,249 0.44% 4.05%
7 Woodford County 1,178 3.07% 3.82%
8 1,079 0.83% 3.50%
9 995 2.26% 3.23%
10 936 0.52% 3.03%
11 934 0.30% 3.03%
12 684 0.10% 2.22%
13 663 0.34% 2.15%
14 626 0.30% 2.03%
15 535 0.21% 1.73%
16 509 0.30% 1.65%
17 405 1.14% 1.31%
18 389 0.39% 1.26%
19 306 0.29% 0.99%
20 251 0.54% 0.81%
21 227 1.37% 0.74%
22 218 0.15% 0.71%
23 217 0.99% 0.70%
24 195 0.37% 0.63%
25 179 0.51% 0.58%
26 178 0.13% 0.58%
27 168 0.16% 0.54%
28 165 0.32% 0.53%
29 142 2.67% 0.46%
30 140 0.38% 0.45%
30 140 0.21% 0.45%
31 134 0.21% 0.43%
32 130 1.11% 0.42%
33 127 0.26% 0.41%
34 119 0.22% 0.39%
35 118 0.36% 0.38%
35 118 0.55% 0.38%
36 112 0.42% 0.36%
37 111 0.25% 0.36%
38 106 0.32% 0.34%
39 105 0.10% 0.34%
40 103 0.52% 0.33%
41 101 0.65% 0.33%
42 100 0.75% 0.32%
43 94 1.18% 0.30%
44 93 0.64% 0.30%
45 92 0.33% 0.30%
46 91 0.58% 0.30%
47 89 0.26% 0.29%
48 83 0.57% 0.27%
49 82 0.49% 0.27%
50 81 0.60% 0.26%
51 80 0.25% 0.26%
52 74 0.21% 0.24%
52 74 0.14% 0.24%
52 74 0.14% 0.24%
53 70 0.76% 0.23%
54 69 0.18% 0.22%
55 68 0.44% 0.22%
55 68 0.49% 0.22%
55 68 0.25% 0.22%
56 65 0.13% 0.21%
56 65 0.17% 0.21%
57 54 0.31% 0.18%
58 51 0.14% 0.17%
59 50 0.07% 0.16%
60 49 0.18% 0.16%
61 47 0.37% 0.15%
62 46 0.25% 0.15%
63 45 0.13% 0.15%
63 45 0.30% 0.15%
64 43 0.27% 0.14%
65 42 0.27% 0.14%
66 38 0.28% 0.12%
67 33 0.20% 0.11%
68 24 0.08% 0.08%
69 21 0.38% 0.07%
70 19 0.37% 0.06%
71 16 0.12% 0.05%
71 16 0.08% 0.05%
72 15 0.12% 0.05%
73 14 0.21% 0.05%
74 13 0.08% 0.04%
75 11 0.09% 0.04%
75 11 0.29% 0.04%
76 9 0.05% 0.03%
77 8 0.06% 0.03%
77 8 0.17% 0.03%
78 7 0.03% 0.02%
78 7 0.05% 0.02%
79 4 0.07% 0.01%
79 4 0.02% 0.01%
80 3 0.01% 0.01%
80 3 0.02% 0.01%
81 1 0.02% 0.00%
81 1 0.01% 0.00%
82 0 - -
82 0 - -
82 0 - -
82 0 - -
82 0 - -
82 0 - -
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Methodology

This ranking list is based on data from the American Community Survey (ACS) 5-Year Estimates, conducted by the U.S. Census Bureau. The ACS is one of the most reliable sources for understanding population trends across different locations, and it provides estimates for various racial and ethnic groups at city, county, state and all geography levels down to the Census block group.
This list ranks county in Illinois by their Swiss population, using the most recent ACS data available.

How the Census defines Swiss population

The U.S. Census Bureau allows people to self-identify their ancestry, meaning individuals can write upto ancestries when responding to the survey. In this ranking, we include everyone who identifies as having Swiss ancestry, whether alone or in combination with another ancestry.
Here are a few important things to know about how ancestry is reported:
  • Some people identify as Swiss alone, while others identify as Swiss along with another race (such as Swiss and German).
  • We’ve used the “Swiss alone or in any combination” category unless noted otherwise, which gives a broader picture of the Swiss population in each area.

How We Ranked the Data

This ranking is based on the total number of people who identified as Swiss alone or in combination in county. To provide additional context, we’ve also included two key percentages:
  1. % of Total County Population – This shows what percentage of the total state population identifies as Swiss .
  2. % of Total Illinois Swiss Population – This tells us how much of the entire U.S. Swiss population lives in that state.
To keep things simple, all population numbers have been rounded to the nearest whole number, and percentages are rounded to one decimal place. Because of rounding, some percentages may not add up to exactly 100%.

Things to Keep in Mind

Like all survey-based data, ACS estimates come with some limitations. Here are a few things to be aware of:
  • In places with very small Swiss populations, the numbers may not be reported at all due to privacy protections or sampling variability in the survey.
  • Since the ACS is based on a sample, the numbers are estimates, not exact counts. That means they may slightly differ from other sources like the decennial U.S. Census.
  • County that don’t have any reported Swiss population are not included in the ranking but are listed separately below for reference.
This ranking is meant to provide a clear, data-driven look at where Swiss populations are most concentrated while keeping the numbers easy to understand.

Sources

  1. 2019-2023 5-Year Estimates.
  2. 2023.