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

U.S. Census data shows 91 Costa Rican residents in Lake County, IL - all concentrated in three cities: Lindenhurst (32), Lake Forest (30), and Buffalo Grove (29). No other incorporated cities in the county report a measurable presence. This analysis ranks all cities in Lake County based on their Costa Rican population.

Top 5 cities with the largest Costa Rican population in Lake County

View All
  • 1
    Lindenhurst
    Costa Rican population in Lindenhurst is 32
    0.22% of Lindenhurst population is Costa Rican
  • 2
    Lake Forest
    Costa Rican population in Lake Forest is 30
    0.16% of Lake Forest population is Costa Rican
  • 3
    Buffalo Grove
    Costa Rican population in Buffalo Grove is 29
    0.07% of Buffalo Grove population is Costa Rican
  • 4
    Antioch
    Costa Rican population in Antioch is 0
    - of Antioch population is Costa Rican
  • 5
    Bannockburn
    Costa Rican population in Bannockburn is 0
    - of Bannockburn population is Costa Rican

Overview of Costa Rican population in Lake County

  • Population Count and Percentage: American Community Survey data document Lake County with 91 Costa Rican residents (0.013% of 711,885 total county population), positioning the jurisdiction at the 90th percentile nationally among counties and 92nd percentile within Illinois for Costa Rican population concentrations, despite absolute population figures.
  • Comparison to State and National Averages: Census Bureau's ACS data indicate Lake County's Costa Rican population of 0.013% remains below Illinois's state average of 0.023% and the national average of 0.055%, placing the county below demographic benchmarks across multiple geographic scales.
  • Share of Total State Population: Official American Community Survey data documents Lake County with 91 Costa Rican residents, representing 3.1% of Illinois's total Costa Rican population of 2,980.
  • Population Density per Square Mile: U.S. Census Bureau's American Community Survey indicate Lake County's density of 0.21 Costa Rican Americans per square mile exceeds Illinois's average of 0.054 per square mile by more than triple, establishing the county as a significant concentration center for Costa Rican demographic communities.
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50 Cities in Lake County Ranked by Costa Rican Population

View Methodology
American Community Survey data show Costa Rican populations in two incorporated cities: Lindenhurst ( rank_1_geo_dempop residents) and rank_2_geo_name ( rank_2_geo_dempop residents). The table below provides additional context, including total population, population density, and demographic distributions, based on the current ACS data for incorporated cities included in this analysis*.
cities in Lake County, IL ranked by Costa Rican population count
Rank by Costa Rican Population
City
Costa Rican Population
% of Total City Population
% of Total Lake County Costa Rican Population
5 Year Rank Trend
1 Lindenhurst 32 0.22% 35.16%
2 Lake Forest 30 0.16% 32.97%
3 Buffalo Grove 29 0.07% 31.87%
4 Antioch 0 - -
4 Bannockburn 0 - -
4 Barrington 0 - -
4 Barrington Hills 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
4 0 - -
Need the complete table? Full rankings and the underlying data sets for California and other locations are available for purchase or license.

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 Costa Rican population, using the most recent ACS data available.

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

How We Ranked the Data

This ranking is based on the total number of people who identified as Costa Rican 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 Costa Rican .
  2. % of Total Lake County Costa Rican Population – This tells us how much of the entire U.S. Costa Rican 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 Costa Rican 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 Costa Rican 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 Costa Rican populations are most concentrated while keeping the numbers easy to understand.

Sources

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