Mexican Population in Lake County, IL by City : 2025 Ranking & Insights

The Mexican population in Lake County, IL is recorded at 134,243 residents, based on the latest U.S. Census estimates. Each city in Lake County, IL has some Mexican population, but the county''s higher total suggests additional rural or non-municipal representation. The analysis below explores how Mexican communities are spread across Lake County, IL and comparable counties throughout Illinois.

Top 5 cities with the largest Mexican population in Lake County

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  • 1
    Waukegan
    Mexican population in Waukegan is 40,531
    45.58% of Waukegan population is Mexican
  • 2
    Round Lake Beach
    Mexican population in Round Lake Beach is 12,761
    47.12% of Round Lake Beach population is Mexican
  • 3
    Mundelein
    Mexican population in Mundelein is 10,503
    33.20% of Mundelein population is Mexican
  • 4
    North Chicago
    Mexican population in North Chicago is 9,477
    30.80% of North Chicago population is Mexican
  • 5
    Zion
    Mexican population in Zion is 7,509
    30.69% of Zion population is Mexican

Overview of Mexican population in Lake County

  • Population Count and Percentage: American Community Survey data document Lake County with 134,243 Mexican residents (18.9% of 711,885 total county population), placing the jurisdiction at the 98th percentile nationally among counties and 97th percentile within Illinois for Mexican population density, with demographic concentrations among the highest nationwide.
  • Comparison to State and National Averages: Census Bureau's ACS show Lake County's Mexican population of 18.9% surpassing both Illinois's state average of 14.2% and the national average of 11.3%, positioning the county as a high-concentration jurisdiction exceeding demographic benchmarks across all geographic scales.
  • Share of Total State Population: Official American Community Survey data documents Lake County with 134,243 Mexican residents, representing 7.4% of Illinois's total Mexican population of 1.8 million.
  • Population Density per Square Mile: U.S. Census Bureau's American Community Survey document Lake County with 302.6 Mexican Americans per square mile, more than nine times Illinois's average density of 32.5 per square mile, placing the county among the most densely concentrated jurisdictions within the state.
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50 Cities in Lake County Ranked by Mexican Population

View Methodology
ACS data [1] confirm Mexican populations in every incorporated city in the county, with the largest counts in Waukegan, Round Lake Beach, Mundelein, and North Chicago. The table below provides detailed figures, including total population, density measures, and demographic distributions, based on the current ACS data for all 50 incorporated cities included in this analysis*.
cities in Lake County, IL ranked by Mexican population count
Rank by Mexican Population
City
Mexican Population
% of Total City Population
% of Total Lake County Mexican Population
5 Year Rank Trend
1 Waukegan 40,531 45.58% 30.19%
2 Round Lake Beach 12,761 47.12% 9.51%
3 Mundelein 10,503 33.20% 7.82%
4 North Chicago 9,477 30.80% 7.06%
5 Zion 7,509 30.69% 5.59%
6 Park City 5,404 70.82% 4.03%
7 Beach Park 4,809 34.38% 3.58%
8 4,777 25.70% 3.56%
9 3,020 9.91% 2.25%
10 2,849 36.37% 2.12%
11 2,636 8.72% 1.96%
12 2,396 8.95% 1.78%
13 2,312 16.50% 1.72%
14 2,036 38.83% 1.52%
15 1,693 3.95% 1.26%
16 1,590 7.68% 1.18%
17 1,516 18.90% 1.13%
18 1,437 13.22% 1.07%
19 1,170 8.14% 0.87%
20 1,007 4.91% 0.75%
21 866 33.50% 0.65%
22 798 9.17% 0.59%
23 787 11.81% 0.59%
24 728 4.94% 0.54%
25 720 12.25% 0.54%
26 499 14.12% 0.37%
27 497 11.04% 0.37%
28 478 13.56% 0.36%
29 442 2.24% 0.33%
30 365 1.90% 0.27%
31 194 1.01% 0.14%
32 151 1.83% 0.11%
33 147 2.30% 0.11%
34 109 0.99% 0.08%
35 107 1.83% 0.08%
36 101 6.42% 0.08%
37 96 7.98% 0.07%
38 86 0.94% 0.06%
39 84 9.42% 0.06%
40 78 0.98% 0.06%
41 75 1.84% 0.06%
42 68 1.26% 0.05%
43 55 1.48% 0.04%
44 53 4.71% 0.04%
45 49 1.57% 0.04%
46 46 6.92% 0.03%
47 33 0.79% 0.02%
48 27 0.68% 0.02%
49 19 1.66% 0.01%
50 10 0.25% 0.01%
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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 city in Lake County, IL by their Mexican population, using the most recent ACS data available.

How the Census defines Mexican 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 Mexican 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 Mexican alone, while others identify as Mexican along with another race (such as Mexican and German).
  • We’ve used the “Mexican alone or in any combination” category unless noted otherwise, which gives a broader picture of the Mexican population in each area.

How We Ranked the Data

This ranking is based on the total number of people who identified as Mexican alone or in combination in city. To provide additional context, we’ve also included two key percentages:
  1. % of Total City Population – This shows what percentage of the total state population identifies as Mexican .
  2. % of Total Lake County Mexican Population – This tells us how much of the entire U.S. Mexican 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 Mexican 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.
  • City that don’t have any reported Mexican 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 Mexican populations are most concentrated while keeping the numbers easy to understand.

Sources

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