Mexican Population in St. Louis city, MO by City : 2025 Ranking & Insights

The Mexican population in St. Louis city, MO is reported at 9,207 residents, according to the latest census estimates - all of whom reside within St. Louis, the only incorporated city in St. Louis city included in this analysis*. With no presence recorded outside St. Louis, the community''s footprint is fully concentrated within the city''s municipal limits. The analysis below takes a closer look at how Mexican residents are situated within St. Louis city and how this compares to other counties across Missouri.

Top 5 cities with the largest Mexican population in St. Louis city

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  • 1
    St. Louis
    Mexican population in St. Louis is 9,207
    3.14% of St. Louis population is Mexican

Overview of Mexican population in St. Louis city

  • Population Count and Percentage: American Community Survey data shows St. Louis city contains 9,207 Mexican residents (3.1% of 293,109 total county population), ranking the jurisdiction at the 87th percentile nationally among counties and 96th percentile within Missouri for Mexican demographic concentrations across both absolute and proportional measures.
  • Comparison to State and National Averages: Census Bureau's ACS records show St. Louis city's Mexican population of 3.1% aligns with Missouri's state average while remaining below the national average of 11.3%, placing both the county and state below typical U.S. demographic concentration levels.
  • Share of Total State Population: Official American Community Survey data documents St. Louis city with 9,207 Mexican residents, representing 4.7% of Missouri's total Mexican population of 195,110.
  • Population Density per Square Mile: U.S. Census Bureau's American Community Survey indicate St. Louis city contains $dem_per_sqmi Mexican Americans per square mile—fifty-two and a half times Missouri's average of 2.8 per square mile—placing the county as a demographic outlier with one of the most concentrated Mexican communities documented in United States demographic research.
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Mexican Population in St. Louis city — St. Louis

View Methodology
American Community Survey data [1] indicate Mexican population in St. Louis city, MO at 9,207 residents — all of whom reside within St. Louis, the only incorporated city included in this analysis*. The table below provides broader statistics, including total population figures, density measures, and demographic distributions based on current ACS data.
cities in St. Louis city, MO ranked by Mexican population count
Rank by Mexican Population
City
Mexican Population
% of Total City Population
% of Total St. Louis city Mexican Population
5 Year Rank Trend
1 St. Louis 9,207 3.14% 100.00%
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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 St. Louis city, MO 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 St. Louis city 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.