Mexican Population in Napa County, CA by City : 2025 Ranking & Insights

The Mexican population in Napa County, CA is reported at 41,353 residents, according to recent U.S. Census estimates. Each of the five cities in Napa County - Napa, American Canyon, Calistoga, St. Helena and Yountville - reports Mexican residents. Their combined count forms most of the 41,353 total, with the rest residing in unincorporated areas. This distribution is detailed in the breakdown below.

Top 5 cities with the largest Mexican population in Napa County

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  • 1
    Napa
    Mexican population in Napa is 27,684
    35.12% of Napa population is Mexican
  • 2
    American Canyon
    Mexican population in American Canyon is 5,426
    25.01% of American Canyon population is Mexican
  • 3
    Calistoga
    Mexican population in Calistoga is 2,206
    42.76% of Calistoga population is Mexican
  • 4
    St. Helena
    Mexican population in St. Helena is 1,065
    19.80% of St. Helena population is Mexican
  • 5
    Yountville
    Mexican population in Yountville is 419
    12.34% of Yountville population is Mexican

Overview of Mexican population in Napa County

  • Population Count and Percentage: American Community Survey data document Napa County with 41,353 Mexican residents (30.4% of 136,070 total county population), placing the jurisdiction at the 95th percentile nationally among counties and 45th percentile within California for Mexican population density, with demographic concentrations among the highest nationwide.
  • Comparison to State and National Averages: Census Bureau's ACS data documents Napa County's Mexican demographic representation of 30.4%, exceeding the national average of 11.3% while remaining below California's elevated state average of 32.3%, placing the county above national concentration levels while below state demographic averages.
  • Share of Total State Population: Official American Community Survey data indicates Napa County contains 41,353 Mexican residents, representing less than 1% of California's total Mexican population of 12.7 million.
  • Population Density per Square Mile: U.S. Census Bureau's American Community Survey data documents Napa County contains 55 Mexican Americans per square mile, below California's average of 81.2 per square mile, while maintaining moderate community presence relative to state demographic concentration standards.
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Napa County Cities Ranked by Mexican Population

View Methodology
American Community Survey data [1] indicate Mexican populations across all five cities, led by Napa with 27,684 residents, followed by American Canyon with 5,426 residents. The table below provides broader statistics, including total population figures, density measures, and demographic distributions based on current ACS data for the five incorporated cities included in this analysis*.
cities in Napa County, CA ranked by Mexican population count
Rank by Mexican Population
City
Mexican Population
% of Total City Population
% of Total Napa County Mexican Population
5 Year Rank Trend
1 Napa 27,684 35.12% 66.95%
2 American Canyon 5,426 25.01% 13.12%
3 Calistoga 2,206 42.76% 5.33%
4 St. Helena 1,065 19.80% 2.58%
5 Yountville 419 12.34% 1.01%
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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 Napa County, CA 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 Napa 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.